General Technical Policies & Information Bulletins...

General Technical Policies & Information Bulletins

1948-1953

1948 (New) SeriesNr. 1 - Special Brake Adjustment on First Cars Nr. 2 - Model Designations Nr. 4 - Product Performance Reports Nr, 5 - Service Specification List Nr. 6 - Door Bottom Weatherstrip Change Nr. 7 - New Car Inspection Cards Nr. 8 - Door Striker Adjustment Nr. 9 - Under Panel Noises Nr. 10 - Additional Data - Dust and Fumes Nr. 11 - Goveneor Discontinued Nr. 12 - Importance of Pre-Delivery Inspection Nr. 13 - Air Filter Pad Discontinued Nr. 14 - New Heater Control Unit Nr. 15 - Propellor Shaft Vibration Nr. 16 - Exhaust Damper Anti-Rattle Spring Installation Nr. 17 - Engine Oil Loss Nr. 18 - Instruct Owners on Tire Maintenance Nr. 19 - Windshield Glare Reduction Nr. 20 - New Flat Rate Manual Nr. 21 - DriveMaster & VacuMotive Drive Instructions Nr. 22 - Radiator Pressure Cap Available Nr. 23 - Cracked Battery Cases Nr. 24 - New Tool Price List Nr. 25 - Overdrive Lubricant Level

1949 - 490 SeriesNr. 1 - New Mechanical Procedure Manual - 490 Nr. 3 - Distributor Spark Advance Changed Nr. 4 - Engine Stalling on Grades Nr. 5 - Revised Spark Advance

1949 - 490 Series (Cont’d) Nr. 6 - Rear Axle LubricantsNr. 7 - Check Storage Batteries Nr. 8 - Transmission ClearanceNr. 9 - Door Lock Operation Nr. 10 - New Specification & Data List - 480-490 Series Nr. 11 - Flywheel Marking Changed Nr. 12 - Ventilation and Driving Nr. 14 - Rear Compartment Floor Panel Breakage Nr. 15 - New Tool Guide Nr. 16 - Carburetion Change Nr. 17 - Service Merchandiser Announcement Nr. 18 - Complete Kent-Moore Tool Guide - Apr. 1, 1949 Nr. 19 - Shorted Ignition Nr. 20 - Fuel Pump Installation Nr. 22 - Air Noise - Heater Tube Redesigned - 480-490 Series

1951 - “A” SeriesNumber 11 - Radio Interference Number 13 - Radio Speakers Boxed Seperately Number 14 - Cylinder Head Interchange

1952 - “B” SeriesNumber 1 - New Car Appearance (Paint Care) Number 2 - Chrome Protection 1952 Models Number 3 - Technical Information B Series Number 4 - OPS Flat Rate Approval Number 6 - Twin-H Carburetor Adjustment 7B Models

1953 - “C” SeriesT-195 - Number 2 - Power Steering Operation T-158 - Number 5 - Radio Speakers Installed at Factory

I N D E X

FORM 11053

HUDSON MOTOR CAR COMPANY, DETROIT 14, MICHIGAN

General Technical Policies

AND Information Bulletin

Number

Date

Subject

TO ALL DEALERS:

In view of the fact that the first of the new Hudson’s to reach our selling organizations in the field will be used largely as demonstrators and since we are very anxious that every demonstra-tion impresses the prospect in the most favor-able manner, we have deviated slightly from our standard brake adjustment on the cars included in the first shipments from the factory.

In order to get a softer pedal and velvety brake action during the break-in period or first few hundred miles of driving, we are adjusting the primary and secondary shoes of both front and rear brakes to a clearance of from .014 inches to .015 inches between the linings and drums. This compares with the standard clearance of .010 inches, which represents production specifications. The clearance at the anchor position of both primary and secondary shoes remains at .008 inches which is standard.

Naturally, this setting will result in a low pedal position when the brakes are applied after relatively short mileage, which might give the owner the impression that the brakes are short lived or will require frequent adjustment. To offset this and to prevent the possibility of hard pedal ac-tion due to the mechanical brake follow-up mechanism coming into play, it is imperative that the brakes be readjusted when the car is in for the removal of the governor at 500 miles or during -the 1,000 mile inspection at the very latest. This consists of a simple adjustment made by removingthe adjusting hole covers from the backing plates and expanding the shoes by turning the star wheels until the lining to shoe clearance is reduced to .010 inches to .012 inches.

On cars which you receive after the first shipment or two, this will not be necessary, as we will revert to the standard adjustment specifications on the production line. Cars carrying the standard adjustment can, of course, be easily distinguished from the ones first shipped by the shorter pedal travel before the brakes take hold.

E. J. BLUM Technical Service Manager

NEW SERIES

1

11-18-47

SPECIALBRAKEADJUSTMENTON FIRST CARS

CLEARANCEINCREASEDFOR SOFTACTIONS

CHANGE TOSTANDARDADJUSTMENTAT 500 OR1,000 MILEINSPECTION

NOTNECESSARY ONLATER CARS

FORM 11053




Number

Date

Subject

TO ALL DEALERS;

The new Hudsons are produced in the Super and Commodore Series and carry the follow-ing designations.

Hudson Super Six Series . . . . . . . . . . Model 481 Hudson Commodore Six Series . . . . . Model 482 Hudson Super Eight Series . . . . . . . . . Model 483 Hudson Commodore Eight Series . . . . Model 484

Two models are in current production, both in the Commodore Series. These are the Commodore Six Four Door Sedan, Model 482 and the Commodore Eight Four Door, Sedan, Model 484.

Following are the shipping weights, licensing data and brief specifications:

Hudson Commodore Six Series -- Model 482 A.M.A. Wheel Starting No. of H.P. ShippingBody Type Base Serial No. Cyl. Bore Stroke Rating Weight

4 Door Sed. 124" 482101 & Up 6 3-9/16" 4-3/8" 30.4 3540 lbs.

Hudson Commodore Eight-Series -- Model 484

4 Door Sed. 124" 484101 & Up 8 3" 4-1/2" 28.8 5600 lbs.

The car weight figures given here are shipping weights and include the spare wheel and tire and standard equipment. The weight of any accessories and optional equipment items in-cluded should being added to these figures.

In order to arrive at the curb weight, the weight of the gasoline, oil and water must also be added. This amounts to 55 pounds for the six cylinder models with one gallon of gasoline, or 175 pounds with a full tank. For eight cylinder models, add 60 pounds with one gallon of fuel or 180 pounds with a full tank.

CAR AND ENGINE NUMBERING

The car serial number which is also the engine number, is stamped on a metal plate attached to the right front door hinge pillar post. In the car numbering system, the first three digits of the serial number indicate the series and model, while the remaining digits represent the actual car number. As the cars leave the production line, they are numbered in consecutive order, regardless of series or model. As an example, the car built after 481999 would be numbered 4811000, 4821000, 4831000 or 4841000 instead of 482000.

1948 SERIES

2

12-18-47

MODELDESIGNATIONS

LICENSINGINFORMATION

DRYSHIPPING WEIGHT

CURBWEIGHTS

CARNUMBERINGSYSTEM

Subject

- 2 -

The engine number is stamped on the top of the cylinder between Nos. 1 and 2 exhaust manifold flanges on eight cylinder engines and on the right side of the cylinder at the upper front end, stamped vertically, on six cylinder engines. NOTE: Do not confuse engine number with cast-ing or other numbers appearing at different locations on the engine.

A code letter or letters indicating the oar paint color option is stamped on the upper hinge of the right front door.

As additional models enter production and shipping weights are established, supplements to this bulletin will be issued.

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E. J. BLUM

Technical Service Manager

(THIS BULLETIN AS WRITTEN IS BEING MAILED TO SERVICE STATIONSAS BULLETIN NO. 25).

ENGINENUMBERLOCATION

PAINTCODENUMBER

FORM 11053




Number

Date

Subject

TO ALL DEALERS:

With a large number of the new Hudsons already in the hands of Distributors and Dealers and deliveries to owners in the immediate offing, the matter of keeping the Factory informed con-cerning the performance of the product in the field assumes first importance. For the purpose of re-porting conditions developing in the new cars, we will continue the use of the Product Performance Report as the principal medium for transmitting this information.

Through close cooperation between our sales and service organization in the field and the Technical Division of the Factory Service Department and the use of this report, we can be kept posted regarding the behavior of our cars in the owners' hands and thus be in a position to take quick action in the development of remedial measures for any conditions requiring correction.

The effectiveness of this or any other method of reporting conditions is, of course, largely dependent upon the assistance we receive., from you men on the firing line and we urge you, there-fore, to follow the practice of sending to us promptly, Product Performance Reports dealing with any difficulties experienced by your owners or uncovered in your shops.

When using this form, be sure to send in SEPARATE REPORTS COVERING EACH CON-DITION. When the same condition applies to several cars, one report will suffice, but the data called for regarding car number, mileage, body type and delivery date should be entered for each car on the lines provided on the bottom of the form. Do not assume because you have called our attention to a condition one or more times previously, that there is no point in sending in further reports. It is most important that we know the extent of the condition.

The need for speed in reporting matters of this kind to us is most essential at the beginning of a new model selling season and we, accordingly, ask you to send important product information by wire or telephone call during this period. These, of course, should be supplemented with reports giv-ing complete data.

ALL COMMUNICATIONS RELATING TO PRODUCT DIFFICULTIES SHOULD BE DIRECTED TO THE TECHNICAL DIVISION, SERVICE DEPARTMENT.

One pad of Product Performance Report forms is being mailed to each Distributor and Dealer and since we are most anxious that there will be no interruption in their use, we ask you to inform us of your needs from time to time and we will supply them promptly.

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E. J. BLUM


4

12-29-47

PRODUCTPERFORMANCEREPORTS

KEEPSFACTORYPOSTED

COOPERATIONESSENTIAL

REPORTCONDITIONSSEPARATELY -CONTINUE TOSEND REPORTS

USE WIREOR PHONE

KEEP FORMSON HAND

NEW SERIES

FORM 11053




Number

Date

Subject

TO ALL DEALERS:

With this bulletin we are sending a copy of a list providing specifications and technical infor-mation applicable to the 480 Series Hudson cars. Also included, is a separate Specification, Parts and Tune Up Sheet dealing with the Carter 647-S and 648-S type carburetors used on the six, and eight cylinder models respectively.

The data contained in these sheets is fairly comprehensive and includes, in addition to general production specifications, the necessary information relating to proper clearances and adjustments in-volved in performing engine tune up, inspection and other service work.

Additional copies of these lists will be supplied upon request and supplementary date, of this type becomes available, it will be passed on to the field.

- - - - - - - - - - - - - - - - - - - -

E. J. BLUM


5

1/7/48

SERVICESPECIFICATIONLIST

INCLUDESTUNE UPAND INSPEC-TION DATA

ADDITIONAL COPIES AVAIL-ABLE

NEW SERIES

January 6, 1948

TECHNICAL INFORMATION AND SPECIFICATIONS

Super Six and Super Eight and ENGINE Commodore Six Commodore Eight

Series 481-482 6 cylinder 483-484 - 8 cylinderArrangement L Head L HeadBore and Stroke 3-9/16 x 4-3/8 3 x 4-1/2Piston Displacement 262 Cu. In. 254 Cu. In.Horsepower - Taxable 30-4 28.8 Actual 121 at 4000 RPM 128 at 4200 RPMCompression Ratio - Standard 6.50:1 6.50:1 Optional (AIum. Head) 7.00:1 7.00:1Engine Mounting 3 Rubber 3 - RubberCamshaft - Drive Morse Chain GearsEngine Timing Inlet opens 7º - 18' BUDC 10º - 40' BUDC Inlet closes 53º - 42' ALDC 60º - ALDC Exhaust opens 53º - 18' BLDO 50º - BLDC Exhaust closes 7º - 42' AUDC 18º - 44' AUDC Timing Indication On Sprockets and chain On Gears Timing chain 60 Links 3/8 pitch None Number bearings 4-steel backed babbitt 5-steel backed babbitt Bearing sizes #1 2-3/8 x 1-3/16 2-1/32 x 1-3/8 #2 2 x 15/16 2 x 1-1/16 #3 1-31/32 x 15/16 1--31/32 x 1-1/4 #4 1-1/2 x 1-5/16 1-5/16 x 1-1/16 #5 None 1-1/2 x 1-5/16Crankshaft - Type Compensated Compensated Type and number bearings 4 - Steel backed Babbitt Lined 5-Bronze backed Babbit Lined Diameter and Length #1 2-1/2 x 1-7/16 2-9/32 x 1-5/8 #2 2-1/2 x 1-3/8 2-5/16 x 1-3/8 #3 2-1/2 x 1-5/8 2-11/32 x 1-7/8 #4 2-1/2 x 1-3/4 2-3/8 x 1-3/8 #5 None 2-13/32 x 2 Thrust and End Play No, 3 - .003 to .009 No, 3 - .006 to .012 Radial Clearance .0005 to .0015 .001 Adjusting shims None NoneConnucting Rods - Material Drop-Forged Steel Drop-Forged Steel Weight 34.23 oz. - No bearings 31.36 oz.- with bearings Length - Center to Center 8-1/8" 8-3 /16" Lower end. bearing Replaceable Integral Type and Material Precision-Babbitt Steel Back Spun-Babbitt Diameter and Length 2-1/8- x 1-5/8" 1-15/16” x 1-3/8” End Play .007” to .013 .007 to .013 Radial clearance .0005 to .0015 .0003 to .0006

- 1 -

Super Six and Super Eight and ENGINE (Cont'd) Commodore Six Commodore Eight

Upper end bearing - - Material 1 piece steel back babbitt 1 piece bronze Diameter and Length 31/32 x 1-1/8 3/4 x 29/32 Radial Clearance (fit) .0000 to 0003 at 70º F, .000 to .0003 at 70º FPistons - Type Cam Ground Cam Ground Material Aluminum Alloy Aluminum Alloy Weight and Length 18-1/8 oz - 3-3/4" 10-1/4 oz. - 3-3/16" Pin Center to top 2-1/16" 1-1-1/16" Clearance .0005 to -001 .0005 to .001 Ring groove depth .195 .148Piston Pin - Type and Length Floating - 2-15/16" Floating - 2-7/16" Diameter 31/32" 3/4" Fit in Piston .0000 to .0003 at 70º F .0000 to .0003 at 70º F Fit in Rod Hand push fit at 70º F Hand push fit at 70º F

Piston Rings Material 4- cast iron - Pinned 4-Cast iron - Pinned Joint Pinned Pinned Compression Rings 2 2 Width 5/64 3/32 Oil Rings 2 - 1 below pin 2 - 1 below pin Width - Upper 3/16" 3/16" - Lower 5/32" 5/32" Gap Clearance - All rings .007 to .012 .004 to .009

Valves --Intake Head outside diameter 1-53/64" 1-1/2" Port Diameter 1-11/16" 1-3/8" Lift 11/32" 11/32" Length & Stem Diameter 5-47/64 - 11/32 5-3/32 - 11/32 Stem to guide clearance .0015 to .003 .0015 to .003 Operating clearance - Hot .010 .006Exhaust - Head outside diameter 1-9/16 1-3/8 Port Diameter 1-3/8 1-7/32 Lift 11/32 11/32 Length & Stem Diameter 5-47/64 - 11/32 5-3/32- 11/32 Stem to guide clearance .002 to 004 .003 to .005 Operating clearance - Hot .012 .008Valve angle 7 degrees VerticalValve guide - Length Removable - 3-5/32 Removable - 2-9/16Valve spring pressure 77 lbs. at 2-3/16" 46 lbs. at 2 inchesValve Tappets Type Mushroom Roller Cam Guides Integral with block Removable

Lubricanting Method Full Pressure Du-Flo Pump Type Rotor Oscillating Plunger Pump Drive Worm on Camshaft Worm on CamshaftOil Capacity - Quarts Dry 7-1/2 qts. - Refill 7 qts. Dry 9 qts.- Refill 7 qts.

CLUTCH

Super Six and Super Eight and Commodore Six Commodore Eight

Type 10" single plate in oil 10" single plate in oilFacing Cork Inserts Cork InsertsPilot Bearing Ball BallThrow-out bearing Ball BallPedal Lash 1-1/2" 1-1/2"Clutch Lubricant 1/3 Pint Hudsonite 1/3 Pint HudsoniteLocation Lubricating plug . Front of Flywheel Front of FlywheelVibration Neutralizer 6 Springs 6 SpringsThrowout bearing lubricant Viscous chassis lube. Viscous chassis lube.Fitting and Location Zerk - Right side clutch hsg. Zerk - Right side clutch hsg.

TRANSMISSION

Type Synchro-Mesh Synchro-MeshSpeeds 3 forward - 1 reverse 3 forward - 1 reverseGears All Helical All HelicalGear Ratios without hdm. - Low . 2.61:1 2.61:1 Second 1.65:1 1.65:1 High 1:1 1:1 Reverse 3.l7:1 3.l7:1Gear Ratios with HDM - Low 2.88:1 2.88.1 Second 1.82:1 1.82:1 High 1:1 1:1 Reverse 3.5:1 3.5:1Lubrication - Sumner 90 E. P.- Mild 90 E.P. - Mild Winter 80 E.P. - Mild 80 E.P. - MildCapacity - Without Overdrive 2 pts, 2 pts.With Overdrive a & 3-1/4 Ptso o o 3-1/4 Ptse

PROPELLER SHAFT

Front Shaft - Universals 1 2 Type Needle NeedleRear Shaft - Universals 2 2 Center Bearing Annular Ball Annular Ball Bearing Lubrication Prelubricated] and Sealed Prelubricated & Sealed Spline Lubrication Zerk Fitting Zerk Fitting Universal Lubrication Zerk Fitting Zerk Fitting

- 3 -

REAR AXLE


Type Semi-floating Semi-floatingGear Type Hypoid HypoidRatios 4.1 and 4-5/9 4.1 and 4-5/9Pinion Bearings Taper Roller Taper RollerAdjustment Shim ShimDifferential Bearings Taper Roller Taper Roller Adjusting nut Adjusting nut Adjusting nutWheel bearings Taper Roller Taper RollerAdjustment Shim ShimEnd Play -- Axle Shaft .001 to .004 .001 to .004Pinion and gear back lash .004 to .006 .004 to .006Lubricant S.A.E. 90 Hypoid S.A.E. 90 Hypoid Quantity 3-1/2 Pints 3-1/2 PintsRoad Clearance - Rear 8" 8"

FRONT SUSPENSION

Type Independent coil spring Independent coil springCamber 1/2º to 1-1/2º 1/2º to 1-1/2ºCaster 1/2º to 1-1/2º 1/2º to 1-1/2ºToe-in 1/32 plus or minus 1/32 1/32 plus or minus 1/32Spindle pin. inclination 3º - 36’ 3º - 36’Spindle pin thrust bearing Ball Bal1Wheel bearing - Type Adj. tapered roller Adj. tapered roller End Play .001 to .003 .001 to .003Tio Rod End - Type Plain Bearing Plain BearingTie Rod End Adjustment- (As seen from right side of car.) To Lengthen Turn clockwise Turn clockwise To Shorten Turn anti-clockwise Turn anti-clockwiseRoad Clearance Front 8" 8”

SPRINGS

Front Type Coil (Heavy duty available) Coil Free Height 16-5/16” 16-5/16" Height under curb weight 9-9/16” 9-9/16”Rear - Type Semi-elliptic (Heavy Duty Avail.) Semi-elliptic Length and width 54” - 1-3/4” 54” - 1-3/4” No. Leaves 8 8 Covers Metal Metal Shackles Silent "U" Threaded Silent “U” Threaded Lubricant - Shackles and Leaves Viscous chassis lube. Viscous chassis lube,

- 4 -

STEERING GEAR


Type Worm & Triple tooth roller Worm & Triple tooth rollerRatio 20.4:1 20.4:1Steering wheel diameter 17” and 18” 17” and 18”Adjustments: Worm Shaft Shim Shim Cross Shaft Set Screw Set Screw Gear Mesh Set Screw Set ScrewLubricant - Summer and Winter S.A.E. 90 E.P. S.A.E. 90 E.P.

BRAKES

Type Bendix-Duo - Automatic Bendix-Duo - Automatic Drum Diameter, 11” 11”Material Centrifuse Centrifuse Lining - Type Moulded Moulded Width Front 2-¼” - Rear 1-3/4” Front - 2-1/4” - Rear 1-3/4” Length - per wheel 20.87 20.87 Pieces - per wheel 2 2Braking Area - Total 158.7 sq. in. 158.7 sq. In. Adjustments - Anchor Pin Radially Radially Front and Rear Shoe Screw Screw Clearance - Both ends of shoe .010 .010 Mechanical follow-up 1-1/4 1-1/4 Pedal to floor board 1/4 1/4

TIRES AND WHEELS

Make Goodyear - Super Cushion Goodyear-Super CushionStandard Size 7-10 x 15.00 - 4 Ply 7.10 X 15-00 - 4 PlyStandard Wheel Rim 5.00 x 15.00 5.00 x 15-00Optional Tire 7-60 x 15-00 - 4 Ply 7.60 x 15-00 - 4 PlyOptional Wheel 5.50 x 15.00 5.50 x 15.00Inflation Pressure 24 front and rear 24 front and rear

COOLING SYSTEM

Capacity in quarts 17 quarts 18 quartsCirculation 6 Vane impeller pump 6 Vane impeller pumpTemperature Control Thermostat - by pass 9 Thermostat - by passPump and fan drive V-belt V-beltFan 4 blade 4 BladeBelt Adjustment Generator Mounting Generator MountingPump Bearing 2 Sealed Ball 2 Sealed BallLubrication None - Pre-lubricated None - pre-lubricated

- 5 -

FUEL SYSTEM


Carburetor Make Carter WDO-647-S Carter WDO-648-S Type Dual Down-Draft 1-1/4 Dual Down-Draft 1-1/4 Choke and Heat Control Automatic-Thermostatic Automatic - Thermostatic Fuel Delivery Pressure Pump Pressure Pump Pump Driven from Camshaft CamshaftAir Cleaner and Silencer Dry Std., Oil Bath - Optional Dry Std., Oil Bath - OptionalFuel Tank Capacity 20 US Gallons 20 US Gallons

ELECTRIC EQUIPMENT

Make Auto-Lite Auto-LiteCoil Location Right side cylinder block On intake manifoldDistributor Rotation Clockwise Clockwise Drive Camshaft Camshaft Advance Automatic - Vacuum Automatic - Vacuum Point Gap .020 .017 Breaker Points Open T.D.C T.D.C.Spark Advance,--Dist. Degrees Centrifugal at 400 - 0º 300 - 0º 535 - 1º 335 - 1º 1200 - 6º 400 - 3º 1870 - 11º 1025 - 1º 2000 - 12º 1700 - 17-1/2º

Inches Vacuum (Hg) 9-1/2" - 0º 9-1/2 - 0º 10 - 1 10 - 1º 11--5/8 - 4º 11-5/8 - 4º 13-1/8 - 7º 13-1/8 - 7º 14 - 8-1/2º 14 - 8-1/2º

Firing Order 1-5-3-6-2-4 1-6-2-5-8-3-7-4Lubrication Light Motor oil and High Temperature GreaseGenerator - Type Third Brush Volt. Regulator Third Brush Volt, Regulator Drive V Belt V Belt Charging Rate - Cold 43 amperes at 8 volts 43 amperes at 8 volts Charging Rate - Hot 37 amperes at 8 volts 37 amperes at 8 voltsLubrication - Both ends Motor Oil Motor OilStarting Motor - Drive Bendix BendixControl Switch Solenoid SolenoidBattery - Make National 6 volt National 6 Volt Plates and Capacity 51-120 amp. @ 20 Hr, Rate 51-120 amp, @ 20 Hr, Rate Dimensions W - 7-1/8, L-10-9/16, H - 9 1/16. W - 7-1/8, L - 10-9/16, H - 9 1/16 Terminal Grounded Positive Positive Location Under bonnet left side Under bonnet left sideSpark Plugs - Cast Iron Head Champion J-9, 14 M/M Champion J-9, 14 M/M Aluminum Head Champion H-10 Champion H-10 Gap .032 .032

- 6 -

LAMP BULBS

No. C.P. BASE

Headlight (Sealed beam type) 4030 Sealed SealedBonnet Light 55 2 SingleParking Light with Direction Indicator 1154 21-3 0 DoubleTail and Stop Light 1154 21-3 DoubleLicense Light 63 3 SingleDome Light - Front 87 15 SingleRear quarter Lights (2) 81 7 SingleClock 55 2 SingleSpeedometer 55 2 SingleInstrument Cluster 55 2 SingleDircction Indicator 55 2 SingleRadio 55 2 SingleHeadlight Beam Indicator 55 2 SingleIgnition. Lock 55 2 SingleCourtesy Light 87 15 SingleFog Light Sealed. Beam 4015A Sealed SealedSpot Light Sealed Beam 4535 Sealed SealedParking Light 63 3 SingleGenerator and Oil Indicator 55 2 Single

The fallowing fuses are used in accessory circuits

Weather control 14 Ampere -- on HeaterRadio 14 Ampere -- In lead wire Hudson Drive Master 10 Ampere -- Attached to HDM switchDirectional Signal 10 Ampere -- On Dir, Sig. Harness under dashElectric Clock 3 Ampere -- In back of clockHorn not fused Connected direct to B terminal on regulator

Circuit breakers protect the following circuits :

Headlamp 30 Ampere -- Attached to lighting switchMiscellaneous Lighting 20 Ampere -- On steering support bracket loft side under instrument panelConvertible Top 20 Ampere

- 7 -

BODY AND CHASSIS DIMENSIONS

Body Interior Dimensions (5 Passenger - 4 Door Sedan

6 8Width of Rear Seat Cushion 63” 63”Width of Front Seat Cushion 64” 64”Depth of Front Seat Cushion 18” 18”Depth of Rear Seat Cushion 18” 18”Height of Front Seat Cushion - Measured at highest Point 12-3/4” 12-3/4”Front Seat Horizontal Adjustment 4” 4”Front Seat Vertical Adjustment 1/2” 1/2”Height of Rear Scat Cushion Measured at Highest Point 13-1/2” 13-1/2”Vertical Distance between Steering Wheel and Scat Cushion 6-7/8” 6-7/8”Head Room at Front Seat 37-1/4” 37-1/4”Head Room at Rear Seat 37-1/4” 37-1/4”Leg Room in Front Scat Measured from up on too board following contour of seat cushions 43-1/4” 43-1/4”Leg Room in Rear Seat - Measured from center of foot rest following contour of rear seat cushion 38” 38” Trunk Capacity - With Spare Tire 23-3/4 Cu. Ft. 23-3/4 Cu. Ft. Width of left front pillar with door closed 3-9/16” 3-9/16”

Wheal Base 124” 124”Overall Length - - (Including Bumpers and Guards) 207-1/2” 207-1/2”Overall Width (Including Fenders 77” 77”Tread - Front 58-1/2” 58-1/2” Rear 55-1/2” 55-1/2” Road Clearance Front 8” 8” Rear 8" 8"Overall Height - Road to Roof 60” 60”

--------------------- 8 ---------------------

FORM 11053




Number

Date

Subject

TO ALL DEALERS:

To insure proper alignment at the bottom of the doors on the current production cars and to re-duce the effort required to close them, a change has been made in which the thickness of the doorbottom weatherstrip has been reduced considerably.

Then difficulty is experienced in getting the door to open and close easily on the earlier produc-tion cars, or in making a good seal at the top or side weatherstrips, the rubber weatherstrip at the bottom of the door should be cut back as shown on the attached sketch. This can be done without removing the weatherstrip, using a sharp knife or razor blade and starting the cut at a point about four inches from the rear end and following through to the front end. In this manner, the outer lip or flange is removed for most, of its length and the weatherstrip is reduced to about one-half its original thickness.

Removal of the outer lip of the weatherstrip cuts down the resistance to door closing and at the same time, permits a satisfactory seal at the bottom of the door. Leaving the weatherstrip intact for a short distance from the rear improves the appearance of the job, as the cut away portion does not show when the door is opened.

The above change became effective in production beginning with car number 484-7361.

- - - - - - - - - - - - - - - - - - - -

E. J. BLUM


6

1/8/48

DOOR BOTTOMWEATHERSTRIPCHANGE

CUT OFFFLANGE TOREDUCETHICKNESS

MAKES DOORCLOSINGEASIER

NEW SERIES

FORM 11053




Number

Date

Subject

TO ALL DEALERS:

Attached is an initial supply of the revised New Car Pre-delivery, 1,000 Mile Inspec-tion and 2,000 Mile Inspection cards which are to be used when preparing the new car for delivery to the owner and when performing the inspection and adjustment services to which the owner is entitled at the expiration of 1,000 miles and 2,000 miles of driving.

The operations and procedures shown on the Pre-Delivery _Inspection cards were determined on the basis of a careful study of the new model requirements and represent the lubrication, adjustment and inspection attention each now car must receive prior to delivery.

We cannot emphasize too strongly the need for doing the work called for and start-ing a service record for each car by checking off' the operations on the card as they are completed. By paying attention to these details, the car is assured a proper start in life, which is of vital importance to Customer satisfaction and also eliminates the basis of most owner complaints. In addition, the amount of warranty work and gratis labor the dealer is called upon to provide is greatly reduced.

The Inspection and adjustment services to which the owner is entitled under the terms of the Service Policy at the expiration of 1,000 miles and 2,000 miles of driving must be conscientiously performed, using the 1,000 and 2,000 mile cards for each car and checking off the operations listed. After completion of the work, the signed cards should be placed in the car record file where they will. be available for future reference.

With this bulletin we are sending one pad each of the Pre-Delivery, 1,000 Mile and 2,000 Mile Inspection and Adjustment Cards to each Distributor and Dealer. Since the use of these cards is mandatory in conjunction with the above services, they should be kept on hand at all times. Inform us from time to time of your needs and we will furnish additional cards promptly without charge.

- - - - - - - - - - - - - - - - - - - -

E. J. BLUM


7

1/15/48

NEW CARINSPECTIONCARDS

PRE-DELIVERYINSPECTIONANDADJUSTMENT

USE CARD FOREACH CAR ---INSURESOWNERSATISFACTION

CARDS MUSTBE USEDFOR 1,000 AND2,000 MILEINSPECTION

KEEP ON HAND - ORDER ADDITIONAL REQUIRE-MENTS

NEW SERIES

FORM 11053




Number

Date

Subject

TO ALL DEALERS:

The new door lock employed on the current 480 series Hudson cars makes use of a striker plate which is movable in all directions. This permits making the adjustments neces-sary for proper alignment and sealing, as well as easy opening and closing of the doors.

When moving the striker in making an adjustment, IT IS MOST IMPORTANT THAT THE THREE SCREWS HOLDING IT TO THE PILLAR POST BE LOOSENED SUFFI-CIENTLY TO PERMIT THE STRIKER PLATE TO BE MOVED WITHOUT TAPPING. If the striker is forced, the lances on the door pillar will be sheared where the first type tapping plate is used, or the teeth of the second type tapping plate will cut grooves in the pillar and allow the tapping plate to return to its original position. Following is the step by step procedure.

1. Loosen the three retaining screws shown at (1) on the attached sketch, enough to permit the serrations on the striker tapping plate (2) to disengage from the lances on theinside of the pillar.

2. Adjust height of striker plate (5) to give correct alignment when the door is closed.

3. Adjust inward position of striker plate (3) to hold door firmly against door weather-strips. When making this adjustment, be sure the back. of the striker plate is parallel to the inside flange of the body pillar, as shown at (A). Tighten striker plate screws (1) securely.

4. Close door to bring latch bar into safety catch position (E). Door should not open when a reasonable pull is exerted on door outside handle.

5. If door opens easily when making check outlined in step 4 without pushing the handle button, determine whether first or second type tapping plate is installed. This can be done by removing the striker (3) and. looking through the square holes in the pillar post though which the lower striker screws pass. If the plate has serrations as shown in the sketch of the first type, it should be replaced by one of the second type with teeth around the edges. The second type plate (Part #211976 R.H. and 211977 L.H.) is available from the Factory Parts Department.

6. To replace tapping plate, loosen inside trim on pillar and lift plate out of top of re-tainer (5).

(OVER)

8

1/20/48

DOORSTRIKERADJUSTMENT

DO NOT FORCESTRIKER WHENADJUSTING

LOOSENRETAININGSCREWS

ADJUST FORALIGNMENT

ADJUST FORCLOSING

CHECK SAFETYPOSITION

INSPECT TAPPING PLATE

REMOVINGPLATE

NEW SERIES

Subject

- 2 -

7. File each of the two square holes in the pillar 1/8 inch toward the inside, as shown at (B).

8. Install second type plate, making sure teeth are against face of pillar. Replace trim (4).

9. Replace striker plate (3) and adjust as in steps 2 and 3, but rotate bottom inward as shown by dotted lines in sketch at ( C). This will drop nose (D) of striker plate to give more engagement. with latch bolt (E) in safety catch position.

- - - - - - - - - - - - - - -

E. J. Blum


FILE HOLES

INSTALLINGPLATE

REPLACESTRIKER

FORM 11053




Number

Date

Subject

TO ALL DEALERS:

To eliminate noises In the rear seat under panel and rear compartment floor panel of some of the early production cars the following corrections have been developed and can be easily applied In the field.

REAR SEAT UNDER PANEL

Noise in the rear seat under panel may be corrected by fastening the seat panel to the frame members with sheet metal screws, as depicted in the attached sketch #1 and in accordance with the following procedure:

1. Place a piece of anti-squeak material (strips cut from floorboard silencer will do) on top of frame side and diagonal members (A and B). These strips should be 2" wide, 6" long and 1/8" thick and installed as s own at (C).

2. Drill a 17/64” hole through the under seat panel and the top flange of the frame member (A) at a point 12-1/2” inward and 7-1/2” rearward from the front edge of the seat riser as shown on the sketch. Enlarge the hole in the seat panel only to 3/8”.

3. Drill a 9/32” hole through the seat under panel and the top flange of the diagonal frame member 7-1/2” rearward from the front edge of the seat riser and 4-5/8” from the first hole toward the center of the car, as shown. Enlarge the hole in the panel only to 3/8”.

4. Install a 5/16” x 7/8” self tapping screw (Part #170945) and an 11/32” x 1-1/2” x 1/8” thick washer (Part #170614) in each hole and draw the screws down tightly.

5. Perform the above operations on the right side of the car in the corresponding locations.

Noises developing in the rear body under panel at the rear compartment can be corrected by the following procedure, applied in whole or part as required by the individ-ual car:

Loosen gasoline tank strap bolts (B), (shown in attached sketch #2-- two bolts at rear of tank), allowing tank to drop away from body under panel far enough to place a re-silient pad (made from Part #153031) on top of tank, as shown at (C).

(OVER)

9

1/27/48

UNDERPANELNOISES

REAR SEATPANELCORRECTION

REAR COM-PARTMENT PANEL CORRECTION

NEW SERIES

Subject

- 2 -

2. Place a strip of anti-squeak material between the bottom of the tank and each support strap and tighten tank strap bolts (B).

3. Measure from the upper end of the left tank strap bolt (B) forward in a straight line 9-7/8” and then to the left from this point 9-27/32”. Locate and drill a 17/64” hole here through the under body panel and the left frame member as shown at (A) in the sketch. Enlarge the hole in the under body panel only to 3/8”.

4. Install three 11/32” x 1-1/2” X 1/8” thick washers (Part #170614) between the top of the frame member and the body under panel as shown at (D) in view (A) and align with holes just drilled.

5. Insert a 5/16” x 7/8” self tapping screw (Part #170945) with washer (Part #170614) into hole and tighten securely.

6. Place spare tire in position flat on rear floor. Do not put the jack or any other objectunder the tire. Tighten the spare wheel retaining bolt securely so that a good up-ward pull is ex-erted through the bolt to the under body panel.

- - - - - - - - - - - - - - -

E. J. BLUM


FORM 11053




Number

Date

Subject

TO ALL DEALERS:

With Technical Bulletin #12 dated May 14th, we sent instruction sheets and illustra-tions covering the procedures to be followed in dealing with water and dust leaks and gaso-line odors and advised that additional information on the subject was being prepared and would be sent to the field.

Instructions applying to step #16 which covers the installation of the Rear Seat Back and Shelf Panel to be made when necessary in the elimination of DUST AND GASOLINE FUMES. Two instruction sheets; one covering the operations involved on Sedans and Broughams and the other on Coupes, are included together with a number of reference sketches.

The corrective measures covered in Technical Bulletin #12 and concluded herein, should be applied only in handling actual owner complaints by performing as necessary the operations listed under steps 1 to 11 inclusive for water leaks and 10 to 16 inclusive for dust and gasoline odors.

An initial quantity of the materials required to do the work called for in the instruc-tions is being sent to each Distributor. The Distributor should send in to the Factory Parts De-partment orders for additional quantities of the various items as needed.

A list of the material follows:

PART NUMBER NAME NO. PER CAR

216037 Sponge Rubber (1/4” x 2” x 54” per Sedan ) 1 20” per Bro. & Coupe)

214397 Rubber Cement (3 oz. tube) 1214398 Trim Cement (3 oz. tube) 1214399 Dolfinite - Gray - (Replace Amber) (6 oz. tube) 1216038 Goodrich Putty #29 - 1 qt. (General Sealer) 1214241 Flexlined Burlap (40” Wide x 18” Long) 1175356 Permagum - 12 Strands x 30”214089 Door Lower Front Corner Seal 4216300 Rear Shelf to quarter Panel and Roof Panel Seal 2214973 Rear Shelf to Roof Panel Sealing Block 2214862 Quarter Window Panel Liner - R.H. 1214863 Quarter Window Panel Liner - L.H. 1210789 Sponge Rubber Blocks 2212458 Door Panel Upper Flange Weatherstrip 4206198 Underbody Panel to quarter Panel Hole Filler 2

(OVER)

10

5-26-48

PARTIALINSTRUCTIONSPREVIOUSLYMAILED

ADDITIONALDATA - DUSTAND FUMES

HANDELACTUALCOMPLAINTS

SENDINGINITIALQUANTITY -ORDER ASNEEDED

MATERIALREQUIRED

Subject

FOR COUPES ONLY

PART NUMBER NAME NO. PER CAR

216304 Rear Seat Panel Seal Material 1216305 Rear Seat Panel Bottom Seal 1

FOR USE AS REQUIRED IN SEALING WINDSHIELDS

216039 Dolfinite 3578 - 1 qt.

In a separate bulletin, the Owner Relations Division will inform you regarding theprocedure to be followed in submitting Replacement Certificates and the time allowed covering the operations involved in performing this work.

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

E. T. BLUM

TECHNICAL SERVICE MANAGER

SEPARATEBULLETINCOVERSCOMPEN- SATION

REAR SEAT BACK AND SHELF PANEL SEAL INSTALLATION

In order to make this installation it is necessary to remove the rear seat cushion, rear seat back, quarter trim panel and rear shelf trim panel.

SEDANS and BROUGHAMS

KIT NO. 216302

(1) Cut the rear shelf to roof and quarter panel seal Number 216300 into two pieces starting at the slit in, the side and continuing across as indicated on Sketch #1 for Sedans and Broughams.

(2) With the notched corner of the straight piece of the seal "A" forward, insert through rear compartment opening until the rear end is forward of the wheelhouse to shelf brace "B" as shown on Sketch #2.

(3) Smooth out the seal so that it lays under the shelf and against the quarter panel as shown in Section BB of Sketch #3.

(4) Apply a coating of #214398 Cement to the under side of the shelf panel and press the sealer into it.

(5) Apply a coating of #214398 Cement to the quarter panel and press the seal into

(6) From the front apply cement to the under side of the rear of the quarter window frame and work the front end of the seal into the space between the body outer panel and quarter re-inforcement panel and cement against the quarter window frame. Be sure this space is completely filled. Sketch #2.

(7) Insert sealing block 214793, as shown at "A", Section AA, Sketch #3 and #4, to seal between the rear window channel re-inforcement and the roof panel.

(8) Insert the curved portion cut from seal #216300 on the under side of the panel extending from the hinge bracket to the wheelhouse to shelf bracket, as shown at "B" on Sketch #4. Cement to the under side of the shelf and the under side of roof panel and brackets at both ends to make a tight seal.

(9) Repeat the above operations on the opposite side of the body.

(10) Cut the 214241 Flexlined Burlap and cement with 214398, trim cement to the rear seat trim board as shown in Sketch #5.

(11) Install seat back trim board and cement Flexlined Burlap along the entire top of the shelf along the bottom to the rear seat under tray and along both sides to the wheelhouse and the tray support bracket.

(12) Re-install quarter shelf trim panel cementing the front edge of the trim material down over the front edge of the shelf.

(13) Check quarter liners to be sure that they are not torn and are se6urely cemented in place to the quarter re-inforce ment panel.

(14) Replace seat back and seat cushion.

REAR SEAT BACK AND SHELF PANEL SEAL INSTALLATION

COUPES

KITS NO. 216302 and 216303

This installation differs from the Sedans and Broughams as follows:

(1) Cut the rear shelf to roof and quarter panel seal 216300 into two pieces along the line indicated on Sketch #1 for the part when used for Coupes.

(2) Install rear shelf to roof panel sealing block 214793. Sketch #3.

(3) Install seal, first engaging the slit along the inside edge over the flange of of the wheelhouse to shelf brace as shown on Sketch #6.

(4) Apply trim cement #214398 to under side of shelf, quarter panel, roof panel, and to the braces at both the front and rear of the seal and be sure that a tight cement joint is obtained entirely around the seal.

(5) Loosen head lining from rear of quarter window and about 8" along the top of the shelf as indicated on Sketch #7.

(6) From the piece of seal that was cut off, cut a piece 5" x 6-11/16" as shown on Sketch #1 and cement to inside re-inforcement panel and quarter window frame as shown at B, Sketch #7.

(7) Repeat above operations on opposite side of body.

(8) Cement or staple a piece of Number 216305 Seal to the bottom of the seat back trim panel as shown on Sketch #8.

(9) Cut 7-1/2" (measured at top edge) from each end of seat back trim panel and reinstall.

(10) Cut a piece from the seal material, supplied to the shape indicated at C, Sketch #7 and cement to seal from the shelf down between the seat back stringer and rear quarter inside re-inforcement panel down to the wheelhouse. .

(11) Cut a piece from the sealing material supplied to the dimensions shown at "D" and cement to the seat back trim panel and seal material "C" and the wheelhouse as shown.

(12) Check quarter panel liners to see that they are properly cemented in place and not torn.

(13) Re-attach head lining.

(14) Install rear shelf trim panel cementing the front edge of the trim cloth along the top of the rear seat trim panel as indicated at "A", Sketch #7.

(15) Re-Install quarter trim panel, seat back and cushion.

FORM 11053




Number

Date

Subject

TO ALL DEALERS:

The installation of the Carburetor Governor at the time of assembly of new cars is being discontinued. The discontinuance of the Governor does not alter in any way the recom-mended break-in procedure. It does, however, place more responsibility on the owner for the proper care of his car during the first 500 miles.

When starting with a cold engine, always keep the speed near 30 miles per hour until the engine reaches a normal operating temperature. This is a good practice at any time but especially necessary when the engine is new and the moving parts not worn in. For the first 250 miles keep the speed under 40 but drive as little as possible under 25.

Between 250 miles and 500 miles the top limit may be increased to 60 and between 500 miles and 1000 miles to 60. At least a third of the mileage of each period should be driven at or near the maximum speed recommended. Do not drive at constant speed for any length of time but vary the speed within these limits. At no time during the first 1000 miles should the throttle be opened fully for quick acceleration or hill climbing.

The first 1000 miles are very important to a new engine and a little care during this time will pay off in added economy throughout a longer life.

The owner should also be advised to return the car after the first 500 miles of driving to have the oil changed, as it is good practice to have fresh clean oil in the engine before starting to drive at the increased speeds permissible during the second 500 miles of the break-in.

Instructing the owner on the operation of the car is the dealer's responsibility and maximum owner satisfaction can be obtained only by every dealer properly instructing every owner at the time he takes delivery of his new Hudson.

- - - - - - - - - - - - - - -

E. T. BLUM


11

5/25/48

GOVERNORDISCONTIN-UED

SPEEDS FORFIRST 250MILES

VARY SPEED -DO NOTOPENTHROTTLEWIDE

FIRST MILESIMPORTANT

CHANGE ENGINE OILAT 500 MILES

PROPERINSTRUCTIONDEALER’S RESPONSIBIL-ITY

FORM 11053




Number

Date

Subject

TO DEALERS:

The attention and care exercised when making the new Car Pre-Delivery Inspection, governs to a great extent the first Impression and opinion the owner gets of our product and also, the satisfaction he derives from it during his ownership. We, therefore, again stress the importance of performing the Pre-Delivery Inspection on every new car before turning it over to the owner, and the need for doing each operation called for on the card.

We are changing the Pre-Delivery Inspection procedure to read as follows:

(29) Wash Car Thoroughly. Inspect for Water Leaks. Correct, if Necessary.

(30) Clean Interior of Car.

An additional supply of the Pre-Delivery Inspection Cards is now in the process of printing and they will carry these changes. Please make the above changes on the Pre-Deliv-ery Inspection Cards in your stock, and be sure that the above is made a part of your Pre-Delivery Inspection henceforth.

Since everyone concerned is vitally interested in delivering to the Owner a car which is free from water leaks, be sure to check this detail carefully when the car Is on the wash rack. If there is any indication of water entering the body, apply the applicable correction by following any procedures necessary on this subject, as set forth in Technical Bulletins Nos. 10 and 12.

In the event you run into any unusual condition when making this inspection, please be sure to bring it to the attention of the Technical Division promptly.

- - - - - - - - - - - - - - -

E. J. BLUM TECHNICAL SERVICE MANAGER

12

6-4-48

IMPORTANCE OF PRE-DELIVERYINSPECTION

CHANGINGPROCEDURE -INSPECTIONADDED

ADD OPERATIONS TO CARDS ON HAND

MAKE CORRECTIONSIF NECESSARY

REPORTUNUSUALCONDITIONS

FORM 11053




Number

Date

Subject

TO ALL DEALERS:

The fibre air filter pad attached to the cowl ventilator screen on cars equipped with the Hudson Weather Control, has been discontinued in production and all cars carrying the heater option are now being shipped less this item.

The removal of this pad increases the volume of air entering the body through the cowl ventilator and makes for greater passenger comfort during hot weather. Arrangements should, therefore, be made to have the pads taken off any new cars in stock, as well as to have them removed from all owners cars when they come in for service work. After the pad has been taken off, be sure to replace the cowl ventilator screen.

- - - - - - - - - - - - - - -


13

6-7-48

AIR FILTERPAD DISCON-TINUED

REMOVE FROM NEW AND OWNERS CARS

FORM 11053




Number

Date

Subject

TO ALL DEALERS:

Effective with car #481-68520, a new thermostatic control unit has been added in production to all cars equipped with Weather Control. This device, which is mounted on the dash, immediately below the glove box, assists in maintaining the desired temperatureinside the car ' and Is connected to the beater and operated by the control handle at the bottom of the heater.

When driving the car the handle should be place in about the mid-position. If more heat is needed, move the handle to the right. If the car gets too warm, move handle to the left slightly. After the lever is set there is little need for readjustment as the heat is thermostati-cally controlled.

If cold air is delivered by the heater while the engine is warming up, close the cowl ventilator until the temperature gauge hand moves to the right, then open the cowl ventilator. Do not readjust the heat control during the warm up period in an attempt to get quicker heat. The thermostatic valve remains wide open until the car temperature reached the regulated setting and moving the control handle will not increase the heat flow.

When the control handle is moved to the extreme right, the thermostatic valve is looked open and maximum heat is obtained regardless of temperature. When the control handle is moved to the extreme left, the valve is locked closed and no water flows through the heater. This position is used for summer driving and permits opening the cowl ventilator in hot or rainy weather.

With the exception of the foregoing, operation of Weather Control remains the same as heretofore.

- - - - - - - - - - - - - - -


14

6/7/48

NEWHEATERCONTROLUNIT

MAINTAINSTEMPERA-TUREAUTOMATI-CALLY

FORM 11053




Number

Date

Subject

TO ALL DEALERS:

Reports have been received from the field dealing with vibration and noise emanat-ing from the propeller shaft center bearing on some of the 480 series cars under certain driv-ing conditions. This vibration is most noticeable under heavy torque, as when accelerating in second gear through speeds up to 18 or 20 miles per hour.

As a correction for this condition, we are now in a position to furnish special 5 degree rear axle to rear spring shims for installation between the rear axle spring pads and the top of the rear spring clip plates above the rubber silencing cushions. These shims are installed with the thick ends toward the front of the car, which rotates the front end of the pinion shaft upward.

New rear spring center bolts, having longer heads than the standard bolts to insure the heads entering the pilot holes in the axle housing spring pads, must be used when install-ing these shims. Installation requires removal of the rear spring "U" bolts and raising the rear axle slightly to permit replacement of the spring center bolts with ones having longer heads. A "C" clamp should be installed near the center of the spring to facilitate replacement of the bolt and prevent distortion of the spring covers.

Parts required to make the above correction, consisting of #302270 Rear Axle to Spring Shim and #302271 Rear Spring Center Bolt, are now available from the factory. After determining the number of sets needed to take care of cars requiring correction, place a sepa-rate parts order with the Factory Parts Department. Two each of the shims and bolts are needed per car. Dealers should place their orders for these parts with their Zone or Distribu-tor.

- - - - - - - - - - - - - - -


15

6/16/48

PROPELLERSHAFTVIBRATION

SHIMSCHANGEAXLEPOSITION

LONGERSPRINGBOLTSNECESSARY

MATERIAL AVAILABLEFROM PARTSDEPARTMENT

FORM 11053




Number

Date

Subject

TO ALL DEALERS:

Beginning with car #482-69663, all six cylinder engines are equipped with a spring installed on the exhaust manifold damper valve to minimize the possibility of damper valve flutter or rattle, sometimes encountered at low speeds.

Correction of this condition on earlier cars is simple and can be made in a fewminutes time through installation of the part number 37946, anti-rattle spring. One end of this spring is attached to the part number 302115 clip bolted to the exhaust manifold and the other end to the part number 30868 clip mounted on the end of the damper valve shaft.

The attached sketch shows the manner in which installation is made.


16

6/23/48

EXHAUSTDAMPERANTI-RATTLESPRING

INSTALLATIONEASILYMADE

FORM 11053




Number

Date

Subject

TO ALL DEALERS:

Some reports have been received from the field dealing with depletion of the oil sup-ply on eight cylinder engines, due to oil being forced out of the breather opening at the top of the timing gear cover, during high speed driving.

This condition has been traced to high crankcase pressure caused by the end of the breather pipe bottoming against the inner wall of the valve cover. This in turn is the result of excessive tightening of the bolt holding the breather pipe and tappet cover in place, which distorts the cover and closes the opening into the pipe.

When oil loss through the timing gear cover opening is experienced, the breather pipe should be removed and examined for signs of interference. If the end of the pipe has been contacting the inner wall of the tappet cover, or if the clearance at this point is small, shorten the section of the breather pipe projecting into the tappet cover by cutting it off 3/8" from the end. This will permit the breather to function normally and eliminates the possibility of high crankcase pressure.

E. J. BLUM


17

6/23/48

ENGINE OILLOSS

TAPPET COVERDISTORTED

CUT OFFBREATHERPIPE

FORM 11053




Number

Date

Subject

TO ALL DEALERS:

With the general adoption by the industry of larger cross section, lower air pres-sure tires, the need for proper owner instruction in regard to tire maintenance becomes more important than ever. By carefully following the recommendations and instructions given, Hudson owners can secure maximum tire life and freedom from tire difficulties.

Correct tire pressure is vitally necessary not only for good tire life but also for proper car handling and passenger comfort and safety. All tires used on 480 series Hudson cars should carry exactly 24 pounds air pressure, which should be consistently maintained. Higher air pressure, in addition to making the car ride harder, tends to shorten tire life through excessive wear of the center of the tread and weakening of the tire carcass. Insuf-ficient air pressure, on the other hand, promotes hard steering and parking and short tire life due to uneven wear and heavy wear at the sides of the tread.

The inner tubes now used on Hudson cars hold air without leakage much longer than the natural rubber tubes heretofore used, and checking the air pressure once a week will suffice under average conditions. When the car is driven a considerable distance each day, as when touring, the air pressure should be checked every morning before starting out. To insure operation at the correct pressure (24 pounds front and rear) it is essential that checking and inflation be done only after the car has been standing for some time, so the air in the tires will be at the same temperature as the outside air.

During hot weather, and under hard driving, the air pressure may increase to 28 or 29 pounds. This factor is taken into consideration in the design of the tire and the air pres-sure MUST NOT BE REDUCED under these conditions. More tires are ruined by incor-rect inflation pressure than from any other cause, therefore they should be checked frequently with an accurate tire gauge.

Tire valve caps should be kept tight to prevent loss of air which may escape from a leaking valve and also to preclude entrance of dirt into the valve. Replace missing valve caps promptly.

The standard equipment tire used on all 480 series cars is the 15 x 7.10 size mounted on wheels having a rim width of 5”. The larger tire, which is optional on all mod-els is the 15 x 7.60 size which uses a 5 1/2” wide wheel rim. Wheel rim width is a very important factor in securing tire life and safety with low pressure tires and under no condi-tion should the larger tire be installed on the narrow rim or vice versa.

(OVER)

18

6/24/48

INSTRUCTOWNERS ONTIREMAINTENANCE

CORRECTINFLATIONVITAL TOTIRE LIFE

CHECKPRESSUREFREQUENTLY

HEATINCREASESPRESSURE - USEACCURATEGAGE

REPLACEVALVE CAPS

OPTIONALSIZE TIREREQUIRESWIDER RIM

Subject

Of equal importance to maintaining the correct air pressure is the matter of switching or rotating the tires on the car to equalize wear by subjecting all tires to both driving and braking loads and changing the direction of rotation. Experience has shown that tire mileage can be inincreased fully 25% by systematically changing the position of the tires on the car after each 2500 to 3000 miles of driving. This is done by placing the spare tire on the right rear wheel, right rear to left front, left front to left rear, left rear to right front and right front to spare.

` This method subjects each tire to all wear conditions and requires jacking up only one wheel at a time when changing. Always include the spare tire when switching wheels. This equal-izes the wear and results in each tire running only 80%. of the total car mileage.

Proper tire balance is essential to prevent undue tire wear and wheel tramp which causes handling difficulty and passenger discomfort. Tires are in balance when the car leaves the factory, however, subsequent wear in normal service causes them to go out of balance as the car accumu-lates mileage. Tire balancing is a regular item of tire maintenance service and should be done af-ter each 2500 to 5000 miles of driving.

Tire maintenance is covered in considerable detail in the Owner Manual or Instruction Book and we feel that the matter is of such importance that it should be brought to the attention of every owner at the time he takes delivery of his car.


ROTATE TIRES EVERY 2500 TO 3000 MILES

INCLUDE SPARE WHENROTATING

TIRE BALANCE ISMAINTENANCESERVICE

CALL OWNER’SATTENTION TOMANUAL

FORM 11053




Number

Date

Subject

TO ALL DEALERS:

Glare caused by reflection from the instrument panel into the windshield when the sun is high, has been reduced by using a dull finish on the top of the instrument panel on all cars now being produced.

The instrument panel is grained as before, however, the front is not polished after the lacquer application and the top of the panel and radio grille (or grille cover) is sprayed with a special satin finish lacquer which reduces the reflection of light.

The dull finish on the top of the Instrument panel however, become bright from normal cleaning, however, application of any kind of polish should be avoided. On earlier produc-tion cars, on which the top of the instrument panel has been finished in polished lacquer, the satin finish can be easily obtained. This involves simply cleaning the surface to remove dirt and wax, masking the glass and instrument panel beneath the roll at the top and spraying the top surface with two coats of the satin finish lacquer. On cars equipped with radio, remove the speaker grille and spray separately, also mask radio speaker opening before spraying top of instrument panel.

This lacquer is a special preparation developed for us and is supplied as virgin material which must be reduced or thinned with equal parts of spraying lacquer thinner before use. It should be obtained from the Distributor or Zone Parts Depot on regular parts orders by spec-ifying "Satin Finish Lacquer - Clear", using part number 175421 for one pint and part num-ber 175422 for one quart cans. One pint of the thinned lacquer is sufficient to refinish the top of the instrument panel on four or five cars.

- - - - - - - - - - - - - - -


19

7/15/48

WINDSHIELDGLAREREDUCTION

DULL FINISHLACQUERNOW USED

EASILYAPPLIED TOEARLIERCARS

AVAILABLEFROM ZONEOR DISTRIBU-TOR PARTS DEPOT

FORM 11053




Number

Date

Subject

TO ALL DEALERS:

The new Flat Rate Manual, covering service operations applicable to the 480 series Hud-son cars, is now off the press and copies are being sent to all Zones, Distributors and Dealers in a mailing now taking place.

In keeping with past practice, the new manual is 8-1/2 Inches by 11 inches in size and each operation carries an identifying group and operation number. The book is divided into 23 groups. The standard flat rate times, which have been determined on the basis of performing the operations on a car, are shown in hours and tenths opposite each operation and provision is also made for entering the labor selling price. The conversion table included at the back of the manu-al, will be found helpful in arriving at, and filling in,

As in the case of any flat rate manual, this book is intended to serve as a guide to the Dis-tributor and Dealer in determining his own time allowances and establishing fair and competitive labor charges to Hudson owners. The flat rate times, shown in the new manual, an easily be met by mechanics of average ability, using the special service tools designed for the various opera-tions and following established procedures. They are complete and include the time necessary for locating and preparing a ear, securing the needed tools and parts and testing upon completion of the work.

In the distribution of the manual, two copies are being forwarded to each Zone and Dis-tributor and one copy to each Dealer. Extra copies, ordered through the Factory Parts Depart-ment, will be furnished at 50¢ each.

- - - - - - - - - - - - - - -


20

7/19/48

FLAT RATEMANUAL

LABOR PRICEMUST BEINSERTED

MANUALINTENDEDAS GUIDE -TIMES CANBE EASILYMET

EXTRA COPIESAVAILABLE

FORM 11053




Number

Date

Subject

. . . . . . .

TO ALL DEALERS:

With this bulletin, we are sending copies of two instruction sheets, one dealing with Vacumotive Drive or the automatic clutch unit and the other with Drive-Master.

The instructions and sketches on these sheets will serve as quick references in checking and making necessary adjustments to Drive-Master and Vacumotive Drive as applied to the 480 series cars. This information we are sure will be of material assistance in servicing these units and will be supplemented at an early date with large wall charts providing complete service in-formation.

Drive-Master of course, Includes the complete Vacumotive Drive unit for the automatic operation of the clutch, therefore, in checking or adjusting Drive-Master, both instruction sheets must be used. When performing these checks and adjustments, first turn the instrument panel switch to the left or Vacumotive Drive position and note whether, Vacumotive Drive functions as it should in controlling the automatic operation of the clutch. If this is found to be correct, then the Drive-Master adjustments should be checked in accordance with the procedure set forth on the Drive-Master sheet.

These instruction sheets have been printed in a form adaptable for use as charts and it is suggested that they be posted in the shop for easy reference by the men doing Drive-Master or Vacumotive Drive work.

- - - - - - - - - - - - - - -


(THIS BULLETIN, AS WRITTEN, IS BEING MAILED TO SERVICE STATION AGREEMENT HOLDERS AS BULLETIN NO. 107)

21

7/22/48

DRIVEMASTERAND VACUMO-TIVE DRIVEINSTRUCTIONS

COVERSCHECKING AND ADJUST-MENT

BOTH IN-STRUCTIONS NEEDED FOR DRIVEMASTER

FORM 11053




Number

Date

Subject

TO ALL DEALERS:

Through the installation of the part number S. P. 302265 Radiator Pressure Cap which is now available through the Factory Accessory Division, the cooling system of the 480 series Hudson six and eight models can be transformed from the open to the closed or pressure type

The pressure type cap, by closing off the overflow opening, prevents loss of coolant. It contains two valves, a pressure valve to limit the pressure within the system to approximately seven pounds, and a vacuum valve which operates when the pressure within the cooling system drops below the outside air pressure, thus preventing collapse of the various hoses.

Outstanding among the advantages of pressure cooling are greater engine efficiency through operation at higher temperatures due to increasing the boiling point of the coolant, conservation of anti-freeze solution, and preventing overflow coolant loss during normal opera-tion. The radiator core and other parts of the cooling system on the current series cars are designed to satisfactorily handle the pressure developed and the radiator filler neck incorporates a seat for the pressure type cap as well as a now, higher location for the overflow pipe. Use of the pressure cap should be confined to the 480 series cars as the cooling systems of earlier mod-els are not designed for pressure operation.

The pressure type radiator cap Is interchangeable with the standard cap and no work is necessary when installing it other than to make sure that all joints, connections, and hoses in the cooling systems are tight. The cap is provided with a stop or partly open position in order to vent the cooling system and relieve the pressure.

The owner should be cautioned against removing the pressure type cap for checking or adding coolant until after the engine has been stopped for several minutes. Before entirely re-moving the cap, it should be turned slightly to the left until the stop is reached. After the pres-sure has been relieved, it may be taken off by depressing and turning it further to the left. When replacing the cap, make sure it is turned all the way to the right.

- - - - - - - - - - - - - - -


(THIS BULLETIN AS WRITTEN IS BEING MAILED TO SERVICE STATION AGREEMENT HOLDERS AS BULLETIN NO. 109

22

7/28/48

RADIATORPRESSURECAPAVAILABLE

MAINTAINSSLIGHTPRESSURE INCOOLING SYSTEM

PREVENTSCOOLANTLOSS -CONSERVESANTIFREEZE

INTER-CHANGEABLE WITH STANDARD CAP

INSTRUCTOWNER HOWTO USE IT

FORM 11053




Number

Date

Subject

TO ALL DEALERS:

An increasing number of reports are being received from the field in connection with leaking storage batteries caused by cracked or damaged cases, necessitating extensive repairs or battery replacement. Our investigation discloses in a high percentage of these cases that break-age is caused by strains set up by excessive tightening of the battery hold-down bolt nuts.

To minimize the possibility of battery case breakage, a change has been made in produc-tion which involves different torque specifications for tightening the hold-down bolt nuts and also in the size of the plain washer used under the nut. The hold-down bolt nuts are now being tightened to a torque of from 2 to 3 foot pounds which is lower than previously used, but suffi-cient to engage the lock washers properly and hold the battery in place. The plain washer has been reduced from 3/4 to 5/8 inches diameter to preclude the possibility of the washer catching on the edge of the battery case and causing breakage when the nuts are tightened.

It is recommended that your mechanics be instructed to check the battery bolt nuts for proper tightness on cars coming into your Service Department for any work and also replace the part #771 plain washer with the smaller one (part #6440) if interference is encountered.

- - - - - - - - - - - - - - -


(THIS BULLETIN, AS WRITTEN, IS BEING MAILED TO SERVICE STATION AGREEMENT HOLDERS AS BULLETIN NO. 114)

23

8-5-48

CRACKEDBATTERYCASE

HOLD-DOWNTIGHTENINGPROCEDURECHANGED

CHECK BOLTSON ALL CARS

FORM 11053




Number

Date

Subject

TO ALL DEALERS:

With this bulletin we are sending a now price list issued by the Kent-Moore Organization, our special tool source, covering changes in the prices of the special tools and other items in-cluded in Hudson Special Tool Manual As which was mailed to the field last year,

Since the issuance of this manual certain items have been deleted from the special tool line. Also, in some instances, the prices of tools have been increased to compensate for today's higher manufacturing costs, while in other cases they have been adjusted downward.

All items currently available in the Hudson's tool line are shown on the new price list to-gether with the now tools developed for servicing the 480 series cars. These new tools are illus-trated and described in a new tool manual which will be mailed to the field in a few days.

- - - - - - - - - - - - - - -


(THIS BULLETIN, AS WRITTEN, IS BEING MAILED TO SERVICE STATION AGREEMENT HOLDERS AS BULLETIN NO. 135.)

24

9/21/48

NEW TOOLPRICE LIST

ITEMS DELETED -PRICES CHANGED

NEW TOOLMANUALREADY

FORM 11053




Number

Date

Subject

TO ALL DEALERS:

Reports have been received from the field to the effect that certain Overdrive equipped cars have been found to contain an excessive quantity of lubricant in the Overdrive unit with a corresponding low level in the transmission. In some instances, this has caused lubricant to be forced into the governor switch and speedometer cable, as well as oil leaks at the Overdrive mainshaft seal.

This condition is caused by the machined surface on the front face of the Overdrive adapter obstructing the 1/2” hole on the left side of the rear transmission face. This is the communicating hole which returns the lubricant to the transmission and maintains the proper level in both units.

When making a correction in the field, the Overdrive unit including the adapter plate, should be dismounted and a new oil return hole drilled in the rear face of the transmission on the right side the location shown on the attached sketch. When doing this, the end of the drill should be coated with thick grease and a piece of cardboard, also coated with thick grease, held against the inside of the transmission rear wall. If carefully done, this will catch the drill chips and obviate the need for disassembling the transmission for cleaning. It is unnecessary to plug or close up in any way the original return hole.

The paper gasket between the adapter and the rear of the transmission has a strip or supporting piece, which tends to cover the oil hole in the new location. A section must be cut out of the gasket at this point to remove this obstruction.

Effective with September 15th production, all cars equipped with Overdrive carry the oil return hole on the right side.

- - - - - - - - - - - - - - -


(THIS BULLETIN, AS WRITTEN, IS BEING MAILED TO SERVICE STATION AGREEMENT HOLDERS AS BULLETIN NO. 143.)

25

10/20/48

OVERDRIVELUBRICANTLEVEL

OIL HOLEOBSTRUCTION

DRILL NEWOIL RETURNHOLE

CUT OUTGASKET

1949 - 490 Series

Nr. 1 - New Mechanical Procedure Manual - 490 Nr. 3 - Distributor Spark Advance Changed Nr. 4 - Engine Stalling on Grades Nr. 5 - Revised Spark Advance Nr. 6 - Rear Axle Lubricants Nr. 7 - Check Storage Batteries Nr. 8 - Transmission Clearance Nr. 9 - Door Lock Operation Nr. 10 - New Specification & Data List - 480-490 Series Nr. 11 - Flywheel Marking Changed Nr. 12 - Ventilation and Driving Nr. 14 - Rear Compartment Floor Panel Breakage Nr. 15 - New Tool Guide Nr. 16 - Carburetion Change Nr. 17 - Service Merchandiser Announcement Nr. 18 - Complete Kent-Moore Tool Guide - Apr. 1, 1949 Nr. 19 - Shorted Ignition Nr. 20 - Fuel Pump Installation Nr. 22 - Air Noise - Heater Tube Redesigned - 480-490 Series

FORM 11053




Number

Date

Subject 490 SERIES

TO ALL DEALERS:

A new Mechanical Procedure or Service Manual, covering the recommended practices in servicing the 480-490 series Hudson cars is available and copies are being sent to the field in a general mailing now being made.

In the new publication, the operations and-procedures involved in servicing the bodies of our cars have been purposely omitted as it has been decided to cover this important work in a separate Body Service Manual. In this manner, only the instructions and information related to body servicing need be supplied to the body department and in addition the subject matter can be treated in greater detail and more comprehensively. The compilation and preparatory work is now nearing completion and the book will be printed and distributed to the field in the near fu-ture.

In the current mailing, one copy is being sent, without charge, to each Dealer and Service Station Agreement Holder of record. Additional copies of the Mechanical Procedure Manual are available at $1.50 per copy and may be secured from your Zone or Distributor, using the regular Dealer to Zone or Distributor Parts Order Form for this purpose. The new Manual is also avail-able at this price to car owners, fleet operators and others who request it.

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

E. T. BLUM TECHNICAL SERVICE MANAGER

(THIS BULLETIN AS WRITTEN IS BEING MAILED TO SERVICE STATION AGREEM ENT HOLDERS AS BULLETIN NO. 9)

1

11-18-48

NEW ME-CHANICAL PROCEDUREMANUAL

BODYSERVICINGIN SEPARATEMANUAL

INITIALMANUAL GRATIS -

ADDITIONALCOPIESAVAILABLE

GENERAL TECHNICAL POLICIES

AND INFORMATION

BULLETIN

Number

Date

Subject


FORM 11053

TO ALL DEALERS:

Effective with car serial number 49133913 the distributor vacuum advance on six cylinder en-gines has been revised to obtain smoother engine operation. The effect of this change is noticeable through the speed range of 35 to 40 miles per hour in high gear on very slight acceleration when some engines have shown roughness due to the vacuum spark advance not retarding quickly enough. This roughness is often misconstrued in the field as engine bearing noise.

This change can be incorporated in the distributors of all 480 & 490 series 6 cylinder engines by replacing the original distributor breaker plate (Auto-Lite Part - IGS - 1004 L) with the revised plate (IGS - 1004 N) which can be obtained from the Factory Parts Department by ordering Part No. 302550 Breaker Plate Assembly. The new plate can be identified by the number 4 stamped on the top surface near the rectangular hole, whereas the original plate is marked 85.

When installing the new plate in the distributor base it should be turned as far as possible in a counter clockwise direction, when viewed from the top, before the attaching screws are securely tightened.

When the vacuum chamber is reinstaIled, it should be held as far as possible in a clockwise direc-tion when viewed from the top at the time the screws are tightened. Check to make sure that the diaphragm arm moves through the advance range without striking the distributor body.

THE IGNITION TIMING MUST BE RESET TO THE T.D.C. MARK AFTER THE NEW PLATE HAS BEEN INSTALLED.

When dealing with reports of engine noise or roughness, it is also most important that the clutch pedal levers be checked for proper clearance. If there is insufficient clearance between the rubber discs and the pads of the coupling levers on the yoke and cross shafts, the vibration and movement of the engine on its mounts will be transferred to the pedal cross shaft resulting in the transmission of engine and other noises. Should inspection disclose this condition, adjust the connecting linkto provide enough clearance at, the pads to insure full separation when the clutch is engaged.

BE SURE TO CHECK THIS CLEARANCE FROM UNDER THE CAR. DO NOT RELY ON THE EARLIER METHOD OF MEASURING BETWEEN THE CLUTCH PEDAL AND TOE BOARD.

- - - - - - - - - - - - - - - - - - - - -

E. T. BLUM Technical Service Manager

3

12-23-48

DISTRIBUTORSPARKADVANCECHANGED

NEW ADVANCEPLATEAVAILABLE

TURNPLATE TOLEFT WHENTIGHTENINGSCREWS

HOLD VACUUMCHAMBER TO RIGHT WHENREINSTALLING

SET TIMINGON DEAD CENTER

CHECK FORCORRECTCLUTCHLEVERCLEARANCE

MEASURECLEARANCEUNDER CAR


AND INFORMATION

BULLETIN

Number

Date

Subject


FORM 11053

TO ALL DEALERS:

Some reports have been received from the field regarding stalling and difficulty in restarting the engines of the 480-490 series 6 cylinder cars, under certain driving conditions. This situation is en-countered in very hilly sections when the car is brought to a stop on an upgrade and Is generallv more pronounced in hot weather.

As a correction for this condition in the field, a tapered metal spacer has been made available for installation between the carburetor and intake manifold. This spacer is designed to mount the car-buretor in a vertical position with the car on a level surface instead of at an angle corresponding to the slope of the engine in the car. This in turn, decreases the angle of the carburetor and provides a better idling mixture when the car is stopped on an upgrade, thereby minimizing the possibility of engine stalling and difficulty in restarting.

When installing the spacer on cars driven in hilly territories whose owners have registered com-plaints of this kind, the thick end must be placed at the rear and the parts between the top of the intake manifold and the bottom of the carburetor assembled in the following order starting at the top of the manifold:

3 - Part Number 159657 Carburetor To Manifold Gasket

1 - Part Number 300977 Carburetor Heat Deflector


1 - Part Number 302457 Carburetor To Manifold Spacer


It will be noted that the revised pack between the intake manifold and carburetor comprising the above items omits three of the eight part number 159657 carburetor to manifold gaskets regularly used.

This new item can be procured from your Zone or Distributor-Parts Department on parts orders calling for part number 302457, Carburetor To Manifold Spacer.

- - - - - - - - - - - - - - - - - - - - - - - -


(THIS BULLETIN AS WRITTEN IS BEING MAILED TO SERVICE STATION AGREEMENT HOLDERS AS BULLETIN NO. 27)

4

1-14-49

ENGINESTALLINGON GRADES

SPACERCHANGESCARBURETORPOSITION

INSTALLA-TIONPROCEDURE

GASKETSDISCARDED

ORDER FROMZONE PARTSDEPARTMENT


AND INFORMATION

BULLETIN

Number

Date

Subject


FORM 11053

TO ALL DEALERS:

In General Technical Policies and Information Bulletin #3 we covered a change in the vacuum spark advance mechanism of the six cylinder distributor for the purpose of securing smoother engine operation at certain points in the driving range. This change which became effective in production with car number 491-33913 can also be made in the field by the installation of the new part number 602550 Distributor Breaker Plate Assembly.

The installation of the new breaker plate of course changes the vacuum spark advance character-istics with the result that the information given in the Mechanical Procedure Manual and other Service publications does not apply. It is most important therefore, that your mechanics be instructed to use the revised specifications shown below whenever a six cylinder distributor having the new breaker plate is being checked for vacuum advance on a distributor testing machine. The new breaker plate can be identified by the figure "4" and the old plate by the figure "8-5" stamped on top. For convenience we are showing both the earlier and revised specifications.

VACUUM SPARK ADVANCE

For cars numbered under 491-33913 For cars numbered 491-33913 and upward -having breaker plate stamped also earlier cars having breaker plate"8-5" stamped "4"

Distributor Flywheel Inches of Distributor Flywheel Inches of Degrees Degrees Mercury Degrees Degrees Mercury

0º 0º 9.5" 0º 0º 12.5" 1º 2º 10" 1º 2º 13.25" 4º 8º 11.5" 2º 4º 14" 7º 1 4º 13.25" 3º 6º 14.75" 8.5º 17º 14" 4º 8º 15.75”

When installing the distributor after checking, the ignition timing should be set on the T.D.C. mark on the flywheel.

- - - - - - - - - - - - - - - - - - - - - - - -


(THIS BULLETIN AS WRITTEN IS BEING MAILED TO SERVICE STATION HOLDERS AS BULLETIN NO. 28)

5

11-14-49

REVISEDSPARK ADVANCE

CHECK TOCORRECTSPECIFICA-TIONS

OLD ANDNEW VACUUMADVANCERANGES

SET TIMINGON T.D.C.


AND INFORMATION

BULLETIN

Number

Date

Subject


FORM 11053

TO ALL DEALERS:

This bulletin supplements the information given in the current owner manual or instruction book in regard to the type of lubricant recommended for the rear axles of 490 series cars.

In place of the S.A.E.-90 Hypoid Gear Lubricant previously called for, we are now using in production an S.A.E-90 Multi-Purpose Gear Lubricant which has been qualified under U.S. Army Specification #2-105B. This lubricant is especially suited for protection of the gears during the break-in period and should be left in the axle for the first 10,000 miles with additions as required at 1,000 mile intervals to maintain the proper level. Seasonal changes are not necessary, however, the lubricant should be drained and replaced every 10,000 miles.

New gears require a break-in period to attain a polish on the tooth surfaces. In the case of a new car no special provision is made for this since the engine break-in procedure insures sufficient protection for these parts. When new rear axle gears or a new carrier are installed in the field howev-er, the owner should be instructed to refrain from accelerating rapidly during the first 500 miles and to adhere to the following break - in schedule.

MILEAGE MAXIMUM SPEED

0-150 Miles 40 MPH 150-300 Miles 50 MPH 300-500 Miles 60 MPH 500-1000 Miles 70 MPH

When making rear axle repairs or parts replacements it is most important that the inside of the housing as well as all working parts be thoroughly cleaned before reassembly. Any metal parti-cles in the lubricant will cause scoring of the hypoid gears.

As an indication of compliance with the requirements of Army Specification 2-105B cover-ing the type lubricant recommended for our axles a certificate is issued to the Refiner for each S.A.E. grade (viscosity) which has passed the tests satisfactorily. All Refiners can supply proof of compli-ance by copy of the certificate. It is suggested that this be requested of Suppliers when purchases are being made.

The instructions and recommendations given above and in the 490 Owner Manual are retroactive and apply equally to the 480 series cars.

- - - - - - - - - - - - - - - - - - - - - - - - E. J. BLUM TECHNICAL SERVICE MANAGER

TECHNICAL SERVICE MANAGER (THIS BULLETIN AS WRITTEN IS BEING MAILED TO SERVICE STATION AGREEMENT T HOLDERS AS BULLETIN NO. 29)

6

1-14-49

REAR AXLELUBRICANTS

S.A.E. 90MULTI-PURPOSEGEARLUBRICANTNOW USED

NEW GEARSREQUIREBREAK-IN

CAREFULLYCLEAN PARTS

REFINER CANFURNISHPROOF OFCOMPLIANCE

APPLIES TOALL 480 & 490SERIES CARS


AND INFORMATION

BULLETIN

Number

Date

Subject


FORM 11053

TO ALL DEALERS:

Effective with car serial number 49133913 the distributor vacuum advance on six cylinder en-gines has been revised to obtain smoother engine operation. The effect of this change is noticeable through the speed range of 35 to 40 miles per hour in high gear on very slight acceleration when some engines have shown roughness due to the vacuum spark advance not retarding quickly enough. This roughness is often misconstrued in the field as engine bearing noise.

This change can be incorporated in the distributors of all 480 & 490 series 6 cylinder engines by replacing the original distributor breaker plate (Auto-Lite Part - IGS - 1004 L) with the revised plate (IGS - 1004 N) which can be obtained from the Factory Parts Department by ordering Part No. 302550 Breaker Plate Assembly. The new plate can be identified by the number 4 stamped on the top surface near the rectangular hole, whereas the original plate is marked 85.

When installing the new plate in the distributor base it should be turned as far as possible in a counter clockwise direction, when viewed from the top, before the attaching screws are securely tightened.

When the vacuum chamber is reinstaIled, it should be held as far as possible in a clockwise direc-tion when viewed from the top at the time the screws are tightened. Check to make sure that the diaphragm arm moves through the advance range without striking the distributor body.

THE IGNITION TIMING MUST BE RESET TO THE T.D.C. MARK AFTER THE NEW PLATE HAS BEEN INSTALLED.

When dealing with reports of engine noise or roughness, it is also most important that the clutch pedal levers be checked for proper clearance. If there is insufficient clearance between the rubber discs and the pads of the coupling levers on the yoke and cross shafts, the vibration and movement of the engine on its mounts will be transferred to the pedal cross shaft resulting in the transmission of engine and other noises. Should inspection disclose this condition, adjust the connecting linkto provide enough clearance at, the pads to insure full separation when the clutch is engaged.

BE SURE TO CHECK THIS CLEARANCE FROM UNDER THE CAR. DO NOT RELY ON THE EARLIER METHOD OF MEASURING BETWEEN THE CLUTCH PEDAL AND TOE BOARD.

- - - - - - - - - - - - - - - - - - - - -

E. T. BLUM Technical Service Manager

3

12-23-48

DISTRIBUTORSPARKADVANCECHANGED

NEW ADVANCEPLATEAVAILABLE

TURNPLATE TOLEFT WHENTIGHTENINGSCREWS

HOLD VACUUMCHAMBER TO RIGHT WHENREINSTALLING

SET TIMINGON DEAD CENTER

CHECK FORCORRECTCLUTCHLEVERCLEARANCE

MEASURECLEARANCEUNDER CAR


AND INFORMATION

BULLETIN

Number

Date

Subject


FORM 11053

TO ALL DEALERS:

Some reports have been received from the field regarding stalling and difficulty in restarting the engines of the 480-490 series 6 cylinder cars, under certain driving conditions. This situation is en-countered in very hilly sections when the car is brought to a stop on an upgrade and Is generallv more pronounced in hot weather.

As a correction for this condition in the field, a tapered metal spacer has been made available for installation between the carburetor and intake manifold. This spacer is designed to mount the car-buretor in a vertical position with the car on a level surface instead of at an angle corresponding to the slope of the engine in the car. This in turn, decreases the angle of the carburetor and provides a better idling mixture when the car is stopped on an upgrade, thereby minimizing the possibility of engine stalling and difficulty in restarting.

When installing the spacer on cars driven in hilly territories whose owners have registered com-plaints of this kind, the thick end must be placed at the rear and the parts between the top of the intake manifold and the bottom of the carburetor assembled in the following order starting at the top of the manifold:


1 - Part Number 300977 Carburetor Heat Deflector


1 - Part Number 302457 Carburetor To Manifold Spacer


It will be noted that the revised pack between the intake manifold and carburetor comprising the above items omits three of the eight part number 159657 carburetor to manifold gaskets regularly used.

This new item can be procured from your Zone or Distributor-Parts Department on parts orders calling for part number 302457, Carburetor To Manifold Spacer.

- - - - - - - - - - - - - - - - - - - - - - - -



4

1-14-49

ENGINESTALLINGON GRADES

SPACERCHANGESCARBURETORPOSITION

INSTALLA-TIONPROCEDURE

GASKETSDISCARDED

ORDER FROMZONE PARTSDEPARTMENT


AND INFORMATION

BULLETIN

Number

Date

Subject


FORM 11053

TO ALL DEALERS:

In General Technical Policies and Information Bulletin #3 we covered a change in the vacuum spark advance mechanism of the six cylinder distributor for the purpose of securing smoother engine operation at certain points in the driving range. This change which became effective in production with car number 491-33913 can also be made in the field by the installation of the new part number 602550 Distributor Breaker Plate Assembly.

The installation of the new breaker plate of course changes the vacuum spark advance character-istics with the result that the information given in the Mechanical Procedure Manual and other Service publications does not apply. It is most important therefore, that your mechanics be instructed to use the revised specifications shown below whenever a six cylinder distributor having the new breaker plate is being checked for vacuum advance on a distributor testing machine. The new breaker plate can be identified by the figure "4" and the old plate by the figure "8-5" stamped on top. For convenience we are showing both the earlier and revised specifications.

VACUUM SPARK ADVANCE

For cars numbered under 491-33913 For cars numbered 491-33913 and upward -having breaker plate stamped also earlier cars having breaker plate"8-5" stamped "4"

Distributor Flywheel Inches of Distributor Flywheel Inches of Degrees Degrees Mercury Degrees Degrees Mercury

0º 0º 9.5" 0º 0º 12.5" 1º 2º 10" 1º 2º 13.25" 4º 8º 11.5" 2º 4º 14" 7º 1 4º 13.25" 3º 6º 14.75" 8.5º 17º 14" 4º 8º 15.75”

When installing the distributor after checking, the ignition timing should be set on the T.D.C. mark on the flywheel.

- - - - - - - - - - - - - - - - - - - - - - - -


(THIS BULLETIN AS WRITTEN IS BEING MAILED TO SERVICE STATION HOLDERS AS BULLETIN NO. 28)

5

11-14-49

REVISEDSPARK ADVANCE

CHECK TOCORRECTSPECIFICA-TIONS

OLD ANDNEW VACUUMADVANCERANGES

SET TIMINGON T.D.C.


AND INFORMATION

BULLETIN

Number

Date

Subject


FORM 11053

TO ALL DEALERS:

This bulletin supplements the information given in the current owner manual or instruction book in regard to the type of lubricant recommended for the rear axles of 490 series cars.

In place of the S.A.E.-90 Hypoid Gear Lubricant previously called for, we are now using in production an S.A.E-90 Multi-Purpose Gear Lubricant which has been qualified under U.S. Army Specification #2-105B. This lubricant is especially suited for protection of the gears during the break-in period and should be left in the axle for the first 10,000 miles with additions as required at 1,000 mile intervals to maintain the proper level. Seasonal changes are not necessary, however, the lubricant should be drained and replaced every 10,000 miles.

New gears require a break-in period to attain a polish on the tooth surfaces. In the case of a new car no special provision is made for this since the engine break-in procedure insures sufficient protection for these parts. When new rear axle gears or a new carrier are installed in the field howev-er, the owner should be instructed to refrain from accelerating rapidly during the first 500 miles and to adhere to the following break - in schedule.

MILEAGE MAXIMUM SPEED

0-150 Miles 40 MPH 150-300 Miles 50 MPH 300-500 Miles 60 MPH 500-1000 Miles 70 MPH

When making rear axle repairs or parts replacements it is most important that the inside of the housing as well as all working parts be thoroughly cleaned before reassembly. Any metal parti-cles in the lubricant will cause scoring of the hypoid gears.

As an indication of compliance with the requirements of Army Specification 2-105B cover-ing the type lubricant recommended for our axles a certificate is issued to the Refiner for each S.A.E. grade (viscosity) which has passed the tests satisfactorily. All Refiners can supply proof of compli-ance by copy of the certificate. It is suggested that this be requested of Suppliers when purchases are being made.

The instructions and recommendations given above and in the 490 Owner Manual are retroactive and apply equally to the 480 series cars.

- - - - - - - - - - - - - - - - - - - - - - - - E. J. BLUM TECHNICAL SERVICE MANAGER

TECHNICAL SERVICE MANAGER (THIS BULLETIN AS WRITTEN IS BEING MAILED TO SERVICE STATION AGREEMENT T HOLDERS AS BULLETIN NO. 29)

6

1-14-49

REAR AXLELUBRICANTS

S.A.E. 90MULTI-PURPOSEGEARLUBRICANTNOW USED

NEW GEARSREQUIREBREAK-IN

CAREFULLYCLEAN PARTS

REFINER CANFURNISHPROOF OFCOMPLIANCE

APPLIES TOALL 480 & 490SERIES CARS


AND INFORMATION

BULLETIN

Number

Date

Subject


FORM 11053

TO ALL DEALERS:

This winter, as in all winters, we are storing cars for spring deliveries.

Are you checking all storage batteries at new car pre-delivery inspection?

Storage batteries are Perishable!

1 - Check gravity of each cell with a cell voltage tester or hydrometer. Use an accurate hydrometer equipped with a thermometer and be sure that compensation is made for electrolyte temperature when taking gravity readings.

2 - Add water if necessary to bring the electrolyte level to the square at top of each cell.

3 - If the cell tester shows a low reading or the gravity is lower than 1280 on the hydrometer, the battery should be recharged AT A SLOW RATE. DO NOT FAST CHARGE AT A HIGH RATE as this is injurious to a new battery.

4 - Inspect terminals at battery and make sure cable and ground strap are clean and coated with grease before tightening the bolts. Also check tightness of ground strap bolts at battery sup port and frame.

Never deliver a new car to a customer without a live and fully charged battery!

Cars on the show room floor and demonstrators should have the batteries checked frequently and recharged whenever the gravity shows below 1230. Cars which are not expected to be in ser-vice for a period of 30 days, should have the battery recharged to a specific gravity of 1280. In the event cars are stored for a period longer than 30 days, the batteries should be removed and charged to 1280 every 30 days. After charging, they should be properly stored and when the cars are pre-pared for delivery, the oldest battery on the storage rack should be put into service first, in order to keep the battery stock rotating.

- - - - - - - - - - - - - - - - - - - - - - - -



7

2-15-49

CHECKSTORAGE BATTERIES

USEACCURATEEQUIPMENT

MAINTAINELECTRO-LYTE LEVEL

RECHARGE AT A SLOW RATE

CHECK AND TIGHTEN CON-NECTIONS

STORAGE CARS REQUIRE SPECIAL ATTENTION


AND INFORMATION

BULLETIN

Number

Date

Subject


FORM 11053

TO ALL DEALERS:

Due to the monobuilt construction and low seating arrangement of our cars, the clearance between the top of the transmission and the floor board cover is necessarily small and therefore an important detail as related to transmission and engine noise.

Some instances have come to our attention in which extensive transmission work and even replacements of complete units in good condition have been made in the field to overcome transmission noise which was caused by interference between the transmission and floor

Make it a point to check this detail on every car during new car pre-delivery inspection while the car is on the hoist, and especially before doing any work in an effort to correct a com-plaint of transmission or engine noise, or vibration.

This operation requires but a few moments, as the clearance can be easily determined from under the car and if it is less than a half-inch at the closest point the floor cover should be sprung upward, using a pry-bar or other similar tool.

- - - - - - - - - - - - - - - - - - - - - - - -


(THIS BULLETIN AS WRITTEN IS BEING MAILED TO SERVICE STATION AGREE-MENT HOLDERS AS BULLETIN NO. 38.)

8

2-18-49

TRANSMIS-SIONCLEARANCE

AVOIDUNNECES-SARYWORK

CHECK DURING PRE-DELIVERY INSPECTION

INTERFER-ENCE EASILY CORRECTED


AND INFORMATION

BULLETIN

Number

Date

Subject


FORM 11053

'TO ALL DEALERS:

Operation of door looks is affected by the relation of the door handle shoulder screw to the surface of the trigger lever of the lock. If there is too much clearance in the at rest position between these parts ("A" - sketch 2) it is possible that the look will not be released when the outside handle push button ("K" - Fig. 1, sketch #1 has been pushed in to the full extent of its travel. If, on the other hand, the knurled shoulder screw ("L" - Fig. 1, sketch #1) is too long, holding the look trigger (sketch #2) in-ward from its free position, it will be impossible to unlock the door either with the key or the inside button (button cannot be raised) after it has been looked by either method.

Difficulty in pulling up the Inside looking button may also be encountered if the outside handle push button sticks and does not return to its full outward position. Pulling out on the push button will per-mit the door to be unlocked. To check door lock and handle operation, proceed as follows:

Open the door and raise the lock bolt to the full latched position, as when the door is fully closed. Press the outside handle push button lightly until contact is felt with the look trigger lever. Measure the travel as indicated at "S" on sketch #1. If the travel Is less than 1/16", the handle shoulder screw should be shortened by grinding off the inner end. If the travel is more than 1/4", the shoulder screw should be lengthened by inserting a drive screw in the inner end asshown at "Y", sketch #1.

If shoulder screw ("L" - sketch #1) is not drilled for a drive screw at the shoulder end, it should be re-moved from the handle and drilled with a .120" drill to a depth of 1/4" as shown at "R", sketch #1. Excess travel can be corrected by installing the drive screw listed below:

If dimension "S" - sketch #1 is more than 5/16" but less than 3/8", use #171221.

If more than 3/8" but less than 7/16", use screw #171222.

If more than 7/16", use screw #71249.

If door look operates normally by depressing the outside handle push button but cannot be released by operating the inside remote control handle after the car has been standing outside in cold weather, it is probably due to water having gotten on the cloth silencer surrounding the remote control operating link causing it to freeze to the door inner panel. This can be permanently corrected by thoroughly sat-urating the silencer sleeve with chassis grease.

(OVER)

9

4-19-49

DOORLOCKOPERATION

STICKINGPUSHBUTTON

MEASURETRAVEL -INSTALLDRIVE SCREWIFNECESSARY

DRILLFORDRIVE SCREW

LUBRICATEREMOTECONTROLLINKSILENCER

Subject

- 2 -

Failure of the lock to hold the door closed may be due to the door rotor latch being held open be-cause of lack of lubrication or to water having gotten on the lock and frozen. Re-lubrication of the door lock will correct the condition in either case.

This can be done by removing the door outside handle and cleaning the lock with air, inserting the hose nozzle through the handle opening in the door. The lock should then be lubricated with a good dripless oil by inserting the oil can spout through the handle opening.

With the exception of the correction of frozen remote control links, the foregoing operations can be performed without removing the inside trim or door looks.

The information given below and on the attached sketches, will assist in the identification of the various outside door handles used on the Super and Commodore Models:

Mounting Dimension ShoulderPart Number Car Models Surface Shape "X" Screw

211793 Super Sedan - Front "M" 51/64" 212245211781 Comm. Sedan - Front "M" 51/64" 212245211794 Super Sedan - Rear Right "N" 1-11/32" 212247211760 Comm. Sedan - Rear Right "N" 1-11/32" 212247211795 Super Sedan - Rear Left "N" 1-11/32" 212247211761 Comm. Sedan - Rear Left "N" 1-11/32" 212247211796 Super - Brougham, Coupe and Convertible "M" 29/32" 212246211791 Comm. - Brougham, Coupe and Convertible "M" 29/32" 212246

Super model outside door handles are of grooved design as shown at "H" figures 2 and 4, while the handles used on Commodore Models are smooth and oval. See "H", figures 1 and 3.

Make sure your service personnel become acquainted with the operations covered by this bulletin in order to save time in the elimination of unnecessary work.

E. T. BLUM


RELUBRICATELOCK

CLEAN WITHAIR - USE DRIPLESS OIL

DOOR HANDLEIDENTIFICA-TION

FAMILIARISESERVICE PERSONNEL

(See next page for Sketch #2)


AND INFORMATION

BULLETIN

Number

Date

Subject


FORM 11053

TO ALL DEALERS:

Attached is a copy of a list of Mechanical Specifications and Technical Data applica-ble to the 480-490 Series Hudson cars.

The data contained In this revised list includes factory production specifications and also information relative to clearances and tolerances involved in performing the important service operations on our cars.

Also included are complete torque specifications covering tightening of all important bolts and nuts as well as sketches showing the recommended sequence in tightening cylinder head stud nuts and bolts.

Additional copies of this specification list are available and will be sent on request.

E. J. BLUM


(THIS BULLETIN AS WRITTEN IS BEING MAILED TO SERVICE STATION AGREEMENT HOLDERS AS BULLETIN NO. 56).

10

5-13-49

NEW SPECIFI-CATION & DATA LIST

PRODUCTION & SERVICETOLERANCES

TORQUE &CYLINDERHEADTIGHTENING DATA

EXTRACOPIESAVAILABLE

January, 1949

ENGINE SIX CYLINDER EIGHT CYLINDER

Series 480-490 - 6 cylinder 480-490 - 8 cylinderArrangement L Head L headBore and Stroke 3-9/16" x 4-3/8" 3” x 4-1/2"Piston Displacement 262 Cu. In. 254 Cu. In.Horsepower - Tax.able 30.4 28.8Horsepower Actual 121 at 4000 RPM 128 at 42)) RPMMaximum Torque 200 Ft. Lb. @ 1600 RPM 198 Ft. Lb. @ 1600 RPMCompression Ratio-Standard 6.50: l 6.50:1Optional (.Alum. Head) 7.00:1 7.00:1Compression Pressure 119# @ 125 RPM 119# @ 125 RPMEngine mounting 3 - Points Rubber 3 - Points Rubber

PISTONS

Type & Make Cam Ground (own) Cam Ground (own)Material Aluminum Alloy Aluminum AlloyWeight and Length 18± 7 oz - 3-3/4" 3-3/16”Clearance (Piston to Bore) .0015” to .002 .002 to .0025Ring groove deapth .195 .148

PISTON RINGS

Material Cast iron (pinned) Cast iron - (pinned)Compression rings Tivf) TwoWidth 5/64” 3/32”Oil rings Two TwoWidth - Upper 3/16” 3/16” - Lower 5/32” 5/32”Gap Clearance - All Rings .007 to .012 .004 to .009Ring Expanders None None

CONNECTING RODS

Material Drop Forged Steel Drop-Forged SteelWeight 34.24 oz. No bearings 31.36 oz. With BearingsLength - center to center 8-1/8” 8-3/16"Lower end bearing Replaceable shells Integral Type and material Steel Back Babbitt Lined Spun-Babbitt Diameter and Length 2-1/8” x 1-5/8" 1-15/16" x 1-3/8" End Play .007 to .013 .007 to .013 Diametral Clearance .0005 to .0015 .0003 to .0006 Shims None None

UPPER END BUSHINGMaterial 1 piece steel back babbitt 1 piece bronzeDiameter and Length 31/32” x 1-1/8" 3/4” x 29/32”Diametral clearance .000 to .0003 at 70º F .000 to .0003 at 70º F

SPECIFICATIONS AND TECHNICAL DATA 480 & 490 SERIES HUDSONS

- 2 -

PISTON PIN SIX CYLINDER EIGHT CYLINDER

Type and Length Floating - 2-15/16" Floating - 2-7/16" Diameter 31/32" 3/4" Fit in Piston .000 to .0003 at 70º F .000 to .0003 at 70º F Fit in Rod Hand Push fit at 70º F Hand push fit at 70º F

CRANKSHAFT

Type Compensated CompensatedCounterweights 7 8Vibration Damper Yes (in rubber) Yes (in rubber)End Play .003 to -009 .006 to .012Bearings 4 - Steel Back (Babbitt) 5 - Bronze Back (Babbitt)Removable from below Yes YesThrust On #3 bearing On #3 bearingDiametral clearance .0005 to .00l5 .001Shims None None

BEARING SIZES DIAMETER

#1 . . . . . . . . . 2-4993 to 2.5013 2.2805 to 2.2815 #2 . . . . . . . . . 2.4993 to 2.5013 2.3125 to 2.3135 #3 . . . . . . . . . 2.4993 to 2,5013 2.3425 to 2.3435 #4 . . . . . . . . . 2.4993 to 2.5013 2.3745 to 2.3755 #5 . . . . . . . . . None 2.4055 to 2.4065

NOTE: Undersize bearings available .001, .002, .010, .012 .010

CRANKSHAFT JOURNAL

Diameters (Journals #1 thru #4 #1 2.279 to 2.280 2.4988" to 2.4998" #2 29311 to 2.312 #3 2.341 to 2,342 #4 2-373 to 2-374 #5 2.404 to 2.405

CRANKSHAFT CRANKPINS

Diameters 2.1244 to 2.1254 1.935 to 1.936

Camshaft Number Bearings 4-Steel back Babbitt 5-steel back BabbittBearing sizes:

#1 . . . . . . . . . 2.375 - 2.3755 2.028 - 2.030 #2 . . . . . . . . . 1.997 - 1.9975 1.997 - 1.999 #3 . . . . . . . . . 1.965 - 1.9655 1.965 - 1 .967 #4 . . . . . . . . . 1.497 - 1.4275 1.9345 - 1-9365 None 1.497 - 1.499

Camshaft - Drive Morse Chain & Sprocket Gears Timing Marks On Sprockets and Chain On Gears Timing Chain 60 Links 3/8: pitch None Timing Chain Width 1-1/4" None

- 3 -

Valve Timing: SIX CYLINDER EIGHT CYLINDER Inlet opens 7º 18' BUDC 10º 40' BUDC Inlet closes 53º - 42' ALDC 60º - ALDC Exhaust opens 53º 18' BLDC 50º - BLDC Exhaust Closes 7º 42' AUBC 18º 44' AUDC

Valves: Make Wilcox Rich Wilcox Rich Inserts used No No

Intake: Head outside diameter 1-53/64" 1-1/2" Port Diameter 1-11/16" 1-3/8" Lift 11/32" 11/32" Length & Stem Diameter 5-47/64 - 11/32" 5-31/32 - 11/32 Stem to Guide clearance .0015 to .003 .0015 to .003 Guide Length 2-29/32 2-9/16 Operating clearance - Hot .008 .006

Exhaust: Head outside diameter 1-9/16 1-3/8 Port diameter 11-3/8 1-7/32 Lift 11/32 11/32 Length & Stem diameter 5-47/64 - 11/32 5-3/32 - 11/32 Stem to guide clearance .002 to .004 .003 to .005 Operating clearance - hot .010 .008 Valve seat angle 45º 45º Guide - length 3-5/32 2-15/16 Valve spring pressure 77 lbs. at 2-3/16" 40 lbs. ± 3 lbs. at 2"

Valve Spring: Free Length 2.500 2.343 With valve closed 2.188 2.000 With valve open 1.842 1.656

Valve Tappets: Type Mushroom Roller Cam Guides Integral with block Removable

LUBRICATION

Engine lubricating method Pressure Duo-FloNormal Pressure 40# @ 30 MPH. 3 lbs.Oil pump type Rotor Oscillating PlungerOil pump drive Worm on camshaft Worm on camshaftOil capacity - quarts Dry 7-1/2 quarts refill 7 quarts Dry 8 quarts refill 7 quarts

FUEL SYSTEM

Carburetor make - Carter WDO-647-S WDO-648-SType Dual Down-Draft 1-1/4" Dual Down-Draft 1-1/4"

- 4 -

Fuel System - Cont'd. SIX CYLINDER EIGHT CYLINDER

Choke and Heat Control Automatic - Thermostatic Automatic - ThermostaticFuel Delivery Pressure Pump Pressure PumpPump driven from Camshaft CamshaftAir cleaner and silencer Dry (Std.) oil bath (opt.) Dry (Std,) oil bath (opt.)Fuel Tank Capacity 20 U.S. Gallons 20 U. S, Gallons

COOLING SYSTEM

Capacity in quarts 19 quarts (without heater) 17 quarts (without heater) 20 quarts (with heater) 18 quarts (with heater)Circulation 6 vane impeller pump 6 vane impeller pumpTemperature Control Thermostat - by-pass Thermostat - by-passPump and fan drive V-belt V-beltFall 4 blade 4 bladeFan blade pitch 1-1/2" ± 1/32 1-1/2" ± 1/32Belt adjustment Generator mounting Generator mountingPump bearing 2 sealed ball 2 sealed ballLubrication None - Pre-lubricated None - Pre-lubricated

IGNITION SYSTEM

Make - 6 volt system Auto-Lite Auto-LiteCoil Amperage Draw: Engine stopped 4.5 4.5 Engine idling 2.5 2.5Distributor - Rotation Clockwise Clockwise Drive Camshaft Camshaft Advance Automatic - Vacuum Automatic - Vacuum Cam dwell angle 38º 27º Point Gap .020 .017 Breaker Points Open TDC TDC Breaker Arm Spring Tension 17-20 oz. 17-20 oz. Condenser capacity 25-28 Microfarads 20-25 MicrofaradsFiring order 1-5-3-6-2-4 1-6-2-5-8-3-7-4Lubrication Light oil and high temperature Light oil and high temperature grease grease

Spark Advance-Centrifugal (Distributor Degrees) 400 - 0º 300 - 0º 535 - 1º 335 - 1º 1200 - 6º 400 - 3º 1870 - 11º 1025 - 10º 2000 - 12º 1700 - 17½º Spark Advance Vacuum (Distributor Degrees) 9½" - - - 0º 9½" - - - 0º 10" - - - 1º 10" - - - 1ºFor 6 cylinder cars numbered below 491-33913 11-5/8" - 4º 11-5/8" - 4º 13-1/8" - 7º 13-1/8" - 7º 14" - - - 8½º 14" - - - 8½º 12½" - - - 0º 13¼" - - - 1º 14" - - - 2º

For six cylinder cars numbered above 49133913 14-3/4" - - 3º 15- 3/4" - - 4º

- 5 -

Generator: SIX CYLINDER EIGHT CYLINDER

Auto-Lite GEC-4801-A Type Third Brush Volt. Regulator Third Brush Volt. Regulator End Play .003 - .010 .003 - .010 Drive V-belt V-belt Charging rate - Cold 43 amperes at 8 volts 43 amperes at 8 volts Charging rate - Hot 37 amperes at 8 volts 37 amperes at 8 volts Brush Spring Tension 35 - 53 oz. 35 - 53 oz. Lubrication Motor oil Motor oil

Generator Cutout Relay: Voltage at closing 6.47 6.47 Amperage to open 2 2 (reverse current)

Voltage Regulator: Auto-Lite 4001-A Auto-Lite 4001-A Volts 7.1 to 7,4 @ 70º F 7.1 to 7.4 @ 70º F Max, Chg. Rate @ 35 mph @ 35 mph Chg. Indicator Red Dash Light Red Dash Light

Starter Motor: Make and Model - Auto-Lite MCL-6006 MCL-6006 Control Solenoid Solenoid Drive Bendix Bendix Torque 25 Ft. Lb. 25 Ft. Lb. Brush Spring Tension 42 - 53 oz. 42 - 53 oz. End Play .005 min. .005 min.Lock Test: Amperage Draw 880 880 Volts 4 4

Battery: Make National - 6 Volt National - 6 Volt. Plates & Capacity 51-120 amp. @ 20 Hr. Rate 51 -120 amp. @ 20 Hr. Rate Dimensions W - 7-1/8, L - 10-9/16, H - 9 1/16 W - 7-1/8, L - 10-9/16, H - 9-1/16 Terminal Grounded Positive Positive Location Under hood left side Under hood left side

Spark Plugs: (Cast Iron head) Champion J-7 14 m/m Champion J-7 14 m/m (Aluminum head) Champion H-10 14 m/m Champion H-10 14 m/m Gap .032 .032

Horns: Type Electric Air Electric Air Mfg . Sparks Withington Sparks Withington Amperes draw (each) 15-Amp. @ 6.1 Volt 15-Amp. @ 6.1 Volt

LAMP BULBS NO. CP BASE

Headlight (Sealed beam type ) 4030 Sealed Sealed Bonnet Light 55 2 Single Parking Light with Direction Indicator 1154 21-3 Double Tail and Stop Light 1154 21-3 Double License Light 63 3 Single Dome Light - Front 87 15 Single Rear Quarter Lights (2) 81 6 Single Clock 55 2 Single Speedometer 55 2 Single

- 6 -

Lamp Bulbs - Cont. No. CP Base

Instrument Cluster 55 2 SingleDirection Indicator 55 2 SingleRadio 55 2 SingleHeadlight Beam Indicator 55 2 SingleIgnition Lock 55 2 SingleCourtesy Light 87 15 SingleFog Light Sealed Beam 4015A Sealed SealedSpot Light Sealed Beam 4535 Sealed SealedParking Light 63 3 SingleGenerator and oil Indicator 55 2 Single

FUSES USED ONACCESSORY CIRCUITS

Weather Control 14 Ampere (On Heater Unit)Radio 14 Ampere (Lead Wire)Hudson Drive Master 10 Ampere (Control Switch)Directional Signal 10 Ampere (Wire Harness Under Dash)Electric Clock 3 Ampere (Back of Clock)

Main Circuit Breaker 30 Ampere (Located on Headlight Switch)

Auxiliary Circuit Breaker 30 Ampere (Located on Steering Support Bracket to Instrument Panel

FRONT SUSPENSION SIX CYLINDER EIGHT CYLINDER

Type Independent Coil Springing Independent Coil SpringingCamber 1/2º to 1-1/2º 1/2º to 1-1/2ºCaster 1/2º to 1-1/2º 1/2º to 1-1/2º

NOTE: Caster must not vary nore than 1/2º between sides.

Toe-in 0" to 1/16" 0" to 1/16"Spindle pin inclination 3º 36' 3º 36'Spindle pin thrust bearing Ball BallWheel Bearing - Type Adjustable tapered roller Adjustable tapered roller End Play .001 to .003 .001 to .003Tie Rod End (Type) Plain Bearing Plain BearingNumber of Tie Rods 2 2Tie Rod End Adjustment (As seen from right side of car): To lengthen Turn clockwise Turn clockwise To Shorten Turn counter-clockwise Turn counter-clock-wise

FRONT SPRINGS

Type Coil CoilFree Height 16-5/16" 16-5/16"Height under curb weight 9-9/16" 9-9/16"

- 7 -

STEERING GEAR SIX CYLINDER EIGHT CYLINDER

Make Gemmer GemmerType Worm & Triple tooth roller Worm & Triple tooth rollerRatio 20.4:1 20.4:1Turning radius 21 ft. 21 ft.Steering wheel diameter 17" and 18" 17" and 18"Adjustments: Worm shaft Shim ShimCross Shaft Set Screw Set ScrewGear mesh Set Screw Set ScrewLubricant - Summer and Winter S. A. E. 90 E. P. S. A. E. 90E. P.

TRANSMISSION

Type Synchro-Mesh Synchro-MeshSpeeds 3 Forward - 1 - Reverse 3 Forward - 1 ReverseGears All Helical All HelicalGear Ratios - w/o HTM - Low 2.61:1 2.61:1 - Second 1.65:1 1.65:1 - High 1:1 1:1 - Reverse 3.17:1 3.17:1Gear Ratios - With HTM - Low 2.88:1 2.88:1 - Second 1.82:1 1.82:1 - High 1:1 1:1 - Reverse 3.5:1 3,5:1Lubricant - Summer 90 E. P. - Mild 90 E. P. - Mild - Winter 80 E. P. - Mild 80 E. P. - MildCapacity - Without Overdrive 2 Pints 2 Pints - With Overdrive 3-1/4 Pints 3-1/4 Pints

CLUTCH

Type 10" single plate in oil 10" single plate in oilFacing Cork inserts Cork insertsPilot Bearing Ball BallThrow-out Bearng Ball BallPedal clearance 1-1/2" 1-1/2"Clutch lubricant 1/3 pint Hudsonite 1/3 pint HudsoniteLocation Lubricating Plug Front of flywheel Front of flywheelVibration Neutralizer 6 springs 6 springsThrow-out bearing lubricant Viscous chassis lubricant Viscous chassis lubricantFitting and Location Zerk - Right side clutch housing Zerk - Right side clutch housing

PROPELLER SHAFT

Front Shaft Universals 1 1Rear Shaft Universals 2 2Type of Universals Needle Bearing Needle BearingCenter bearing Annular Ball Annular BallLubrication: Center bearing Pre-lubricated and sealed Pre-lubricated and sealed Splines Zerk fitting Zerk fitting Universals Zerk fitting Zerk fitting

- 8 -

REAR AXLE SIX CYLINDER EIGHT CYLINDER

Type Semi-Floating Semi-FloatingGears Hypoid HypoidGear Ratio 4-1/10 4-1/10Drive Gear 41 Teeth 41 TeethDrive Pinion 10 Teeth 10 TeethGear Ratio 4-5/9 4-5/9Drive Gear 41 Teeth 41 TeethDrive Pinion 9 Teeth 9 TeethDrive Gear & Pinion Backlash .004 to .006 .004 to .006Pinion Bearings Taper Roller Taper RollerAdjustment Shim ShimDifferential Bearings Taper Roller Taper RollerAdjustment Adjusting Nut Adjusting NutWheel Bearings Taper Roller Taper RollerAdjustment Shim ShimAxle Shaft (End-Play) .001 to .004 .001 to .004Lubricant S. A. E. 90 Multi Purpose S. A. E. 90 Multi Purpose (Gear Lubricant) (Gear Lubricant)Quantity 3½ Pints 3½ Pints

REAR SPRINGS

Type Semi-elliptic Semi-elliptic covered covered uncovered uncoveredCovers Metal MetalLength and Width 54" - 1¾" 54" - 1¾"No. Leaves 8 8Shackles Silent "U" Threaded Silent "U" ThreadedLubricant - Shackles & Leaves Viscous chassis lubricant Viscous chassis lubricant

BRAKES

Type Bendix-Duo-Automatic Bendix-Duo-AutomaticDrum Diameter 11" 11"Material Centrifuse CentrifuseLining - Type Moulded MouldedWidth Front 2¼", rear 1¾" Front 2-1/4", rear 1¾”Length - per wheel 20.87 20.87Thickness 3/16 3/16Pieces - per wheel 2 2Braking Area Total 158.7 sq. in. 158.7 sq. in.Adjustments - Anchor pin Radially RadiallyFront and Rear Shoe Screw ScrewClearance - Both ends of shoe .010 .010Mechanical Follow-up 1¼ 1¼Pedal to floor board 1/4 1/4Total fluid capacity of Brake System 1½ U. S. Pints 1½ U. S. Pints

TIRES AND WHEELS

Make and Design Goodyear - Super Cushion Goodyear - Super CushionStandard Size 7.10 x 15.00 - 4 ply 7.10 x 15.00 - 4 plyStandard Wheel Rim 5.00 x 15.00 5.00 x 15.00

- 9 -

Tires & Wheels - Cont. SIX CYLINDER EIGHT CYLINDER

Optional Tire 7.60 x 15.00 - 4 ply 7.60 x 15.00 4 plyOptional wheel 5.50 x 15,00 5.50 x 15.00Inflation Pressure 24# front and rear (cold) 24# front and rear (cold)

BODY AND CHASSISDIMENSIONS - 4-Door Sedan

Wheel Base 124" 124"Tread: Front 58½" 58½" Rear 55½" 55½"

Road Clearance: Front 8" 8" Rear 8" 8"

Overall Length including bumpers and Guards 207½" 207½"

Overall Width (including fenders) 77" 77"

Overall Height (road to roof) 60" 60"

Trunk Capacity (with spare tire) 23¾ cu. ft. 23¾ cu. ft.

Width of front cushion 64" 64"

Width of rear cushion 63" 63"

Depth of Cushions 18" 18"

Front seat adjustment 4" 4"

Head room (front and rear) 37¼" 37¼"

Leg Room (front seat) - Measured 6" up on toe board and following contour of cushion 43¼" 43¼"

Leg Room (rear seat) - Measured from center of foot rest and following contour of cushion 38" 38"

- 10 -TORQUE SPECIFICATIONS

NAME SIZE FT. LBS.

Axle (rear) case cap screw 7/16-14 40- 45Axle (rear) wheel bearing adjusting nut 3/8-24 30-35Axle (rear) drive gear bolt 7/16-20 50-60Axle (rear) differential carrier bearing cap screw 1/2-13 55-65Axle (rear) drive shaft nuts 3/4-20 125-200

Battery hold-down bolt nut 5/16-24 2-3Brake anchor pin nut 5/8-18 80-90Brake control tube nut 3/8-24 80-90Breather tube & valve cover bolt (8 cyl.) 5/16-18 2¾ - 3¼

Clutch throw-out Finger retainer 7/16-20 40-45Clutch cover bolts 5/16-24 20-25Clutch cover driving lug 7/16-20 40-45Clutch housing cap screw 7/16-14 40-45Connecting rod bolt 3/8-24 40-45Camshaft gear bolt 3/6-16 20-30Crankshaft bearing cap stud (8 cylinder) 1/2-20 70-80Crankshaft bearing. cap screw (6 cylinder) 1/2-13 75-80Cylinder head cap screws (6 cylinder) 7/16-14 70-75Cylinder head studs (8 cylinder) 7/16-14 45-50Cylinder support plate bolt 3/8-16 20-30Cylinder head water outlet bolt 3/8-16 20-30

Diff. carrier to housing bolt 3/8-25 35-40

Engine mounting bolt (rear) 7/16-14 40-45Engine mounting bolt (front) 7/!6-20 40-45

Flywheel bolts (8 cylinder) 3/8-24 40-45Front frame anchor bracket bolt 1/2-20 20-25

Manifold (intake) stud 5/16-18 12-15Manifold (exhaust) stud 3/8-16 20-36

Overdrive to transmission case bolt 38-16 20-30Oil pan bolt 5/16-18 15-20

Prop. shaft companion flange nut 3/4-16 90-100Prop. shaft "U" bolts 5/16-24 20-25Prop. shaft center bearing support bolt (To #6 c/m) 5/16-24 20-25Prop. shaft center bearing support c/m bolt (To #5 c/m) 3/8-24 25-30Pedal rod nut 7/16-20 25-30

Spark plugs 14 m/m 20-25Speedometer housing screw 5/16-18 15-20Steering arm (outer) nut 3/4--16 10-16Steering arm (center) nut 5/8-18 50-60 Steering gear Shaft nut 7/8-14 125-140Steering gear to frame bolt 7/16-20 50-60Steering spindle to backing plate bolt nut 3/8-24 25-30Steering spindle nut 11/16-18 75Steering spindle support clamp bolt 3/8-24 40-45Steering spindle support arm (lower) pivot to frame bolt 7/16-20 60-70Steering spindle support arm (upper) pivot to frame bolt 1/2-20 60-70Steering spindle support arm to support bolt nut 13/16-11 100-120Steering wheel nut 5/8-18 20-30

- 11 -TORQUE SPECIFICATIONS - CONT’D

NAME SIZE FT. LBS.

Tie rod end stud nut 1/2-20 60-70Timing gear cover bolt 5/16-18 15-20Transmission comp. flange lock nut 3/4-16 90-100

Vibration dampener screw 3/4-16 100-120

Water pump to cylinder bolt 3/8-16 20-30Water pump fan blade bolt 5/16-18 12-15Wheel hub bolts 1/2-20 60- 65

CYLINDER HEAD TIGHTENING SEQUENCE CHARTS

FRONT

SIX CYLINDER HEAD

FRONT

EIGHT CYLINDER HEAD


AND INFORMATION

BULLETIN

Number

Date

Subject


FORM 11053

TO ALL DEALERS:

Flywheel assembly, Part No. 166302, which was previously specified for the 480 and 490 Series six-cylinder engines, as well as earlier six-cylinder engines with the 10" diameter clutch, has been revised so that the timing marking which read UDC-1-6 now reads UDC-1. This assembly with the changed marking is now being used in production on both six and eightcylinder engines replacing Part No. 166303 assembly previously used on eight-cylinder engines. This change became effective in production on April 21, 1949.

As soon as the present service stock of Part No. 166303 eight-cylinder flywheel is ex-hausted, #166302 will be substituted on all parts orders. Because of the present stock on hand of the earlier #166302 flywheel with the UDC-1-6 marking, it is possible that some of these may be supplied when filling service orders specifying Part No. 166303.

These parts are completely interchangeable and should be used on eight-cylinder en-gines without regard to the numbers stamped at the timing mark.

E. J. BLUM


(THIS BULLETIN AS WRITTEN IS BEING MAILED TO SERVICE STATION AGREE-MENT HOLDERS AS BULLETIN NO. 60).

11

5-18-49

FLYWHEELMARKINGCHANGED

WILLSUBSTITUTE166302FOR166303

FLYWHEELSINTER-CHANGEABLE


AND INFORMATION

BULLETIN

Number

Date

Subject


FORM 11053

TO ALL DEALERS:

From information reaching us it is evident that many owners are not enjoying fully the ventilation and heating comforts obtainable in their Hudson cars through failure to properly operate the ventilat-ing wings and cowl ventilator which control the movement of air in and out of the body.

In order to emphasize the importance of this detail, the new issue of the Hudson Owner Manual or instruction book, now going to press, contains Weather Control and ventilation instructions which have revised as follows:

"The Hudson Weather Control, designed and built Into the body structure as a combined ventilating and heating unit, gives maximum comfort with minimum adjustment of controls.

Fresh air is brought into the car through the cowl ventilator which is located high, out of the zone of splash, heavy gas fumes and dust concentration from preceding or passing traffic and gives the cleanest air available for passengers inside the car.

(1) As soon as engine temperature gauge hand begins to move to the right (usually less than one mile after a cold start) open the cowl ventilator. (26-Fig.5-Page 17)

(2) The automatic temperature control (34-Fig.5-Page 17) should be set slightly to the right of center. Move to right to increase heat - to left to decrease heat.

(3) If car is standing or being driven at slow or intermittent traffic speeds, turn blower control (35- Fig.5-Page 17) clockwise - first position for high or second position for low.

(4) If fogging or frosting of windshield and windows occurs when passengers enter a cold car, turn the blower control to the first position until cleared.

(5) If icing occurs on the outside of the windshield due to snow or rain, turn blower control clock wise to first position. For severe icing it is helpful to move the automatic temperature control to the extreme right. If the inside temperature becomes too high, open front door ventilating wings or lower windows slightly.

(OVER)

12

5-18-49

VENTILA-TION ANDDRIVING

REVISINGOWNER MANUAL

COLDWEATHERDRIVING

Subject

- 2 -

A -The cowl ventilator should be kept fully open, after the engine warm-up period, except when driving at high speeds in extremely cold weather when partial closing of the ventilator will increase the temperature of the air entering the car. Water or snow entering the ventilator while driving is trapped and drained off. The ventilator should, however, be closed when the car is left standing outside for long periods while snow is falling.

B - Ventilating wings and windows should be fully closed. Open windows or wings cause loss of heat and prevent normal circulation of air and heat in the passenger compartment. For example, opening a left front door ventilating wing will cause the heated air to flow from the heater outlet directly past the driver and out the ventilating wing. Little or no heat will reach the other passengers.

C - The temperature control is automatic and once set to the desired temperature requires infrequent adjustment. It is not necessary to move temperature control further to the right for quick heat during engine warm-up. The thermostat automatically opens the control valve wide until the selected temperature in the car is reached, then closes as required to maintain that temperature.

D - Heat is distributed from the front, back and both sides of the heater case so that a large volume of air can be supplied to adequately heat or cool the entire car interior without an excessive amount of air being directed on any of the front seat passengers. A knob located on the left side of the heater case controls the amount of air directed on the driver's feet. The maximum is obtained when the knob is in the up position.

(1) Keep cowl ventilator (26-Fig.5 Page 17) open at all times to got the cleanest air.

(2) Keep automatic temperature control at extreme left.

(3) AT LOW SPEEDS windows and ventilating wings can be opened as desired. For max-imum air intake swing front door ventilating wings out until the desired amount of air is blown across the front compartment. By closing windows and opening rear quarter wings on Sedans the full flow of air is directed through the entire passenger compartment.

(CONT’D)

WARMWEATHERDRIVING


AND INFORMATION

BULLETIN

Number

Date

Subject


FORM 11053

- 3 -

4) AT HIGH SPEEDS close windows and ventilating wings for minimum wind noise and wind burn. Opening rear quarter ventilating wings slightly on Sedans will help maintain full flow of air throughout passenger compartment.

(5) WHEN DRIVING ON DUSTY ROADS keep the cowl ventilator fully open to bring in the cleanest air possible and keep all windows and ventilating wings closed. This maintains a slight air pressure in the passenger compartment preventing dust from entering.

Opening ventilating wings even slightly at medium or high speeds causes an ejector action drawing air out of the passenger compartment so fast that even with the cowl ventilator open, additional air is drawn into the passenger and luggage compartment bringing dust with it."

It is suggested that everyone engaged in selling or servicing Hudson cars make it a point to in-struct every owner in the correct way to operate the weather control unit and also the ventilating wings and cowl ventilator for best results under varying temperature and dust conditions.

E. J. BLUM

(THIS BULLETIN AS WRITTEN IS BEING MAILED TO SERVICE STATION AGREE-MENT HOLDERS AS BULLETIN NO. 61).

12

5-18-49


AND INFORMATION

BULLETIN

Number

Date

Subject


FORM 11053

TO ALL DEALER:

Some reports have been received from the field in connection with fractured rear compartment floor panels on certain 490 Series cars, at the point where the forward ends of the gasoline tank straps are attached to the hangers on the floor. The cars on which this condition has been experienced were built between January 24, 1949 and June 9, 1949 during which time a different gasoline tank strap hanger and rear compartment floor reinforcement was used in production.

On the cars built between these dates, a combination floor reinforcement and tank strap hanger was used instead of separate parts and the method of attachment to the floor was by welding instead of riveting.

Since this situation is important both from the standpoint of floor, breakage and also from the possibility of the tank becoming dislodged and dropping on the road, it is advisable to inspect the con-dition of the floor panel on all cars coming into your Service Station bearing serial numbers from 491-53512 and 491-115800. The presence of dust on top of the rear compartment floor panel near the front ends of the gasoline tank straps generally indicates fractured metal.

Where evidence of floor panel breakage is found a correction should be made by installing Roar Compartment Reinforcement Plate Kit #216829 in accordance with the following instructions and the attached sketch:

1. Remove deadener from top of panel over area where reinforcement plate is to be attached.

2. Drill a 9/32" hole through centerline of left reinforcement #210102.

3. Put reinforcement plate in place as shown and locate with bolt through hole just drilled. (Note: Holes in reinforcement plate for bolts through 210102 reinforcement are to rear of centerline of piece.)

4. Square reinforcement plate with 210102 reinforcement and use plate as template to drill 9/32" hole through centerline of right reinforcement 210102.

5. Lift reinforcement plate and fill depression in floor panel just ahead of holes just drilled with body sealer (#216038).

6. Reinstall reinforcement plate securing with two #170794 bolts, two #71316 Plain Washers, two #71730 lock washers and two #71443 Nuts installed through two holes just drilled.

(OVER)

14

6-24-49

REAR COM-PARTMENTFLOORPANELBREAKAGE

COMBINA-TIONREINFORCE-MENT ANDHANGER USED

INSPECT FOR EVIDENCEOF FAILURE

USE KITFOR CORRECTION

Subject

- 2 -

7. Using reinforcement plate as template drill 10 9/3211 holes and install bolts, nuts and washers.

CAUTION: When drilling holes toward rear of plate use spacer on drill to prevent breaking through far enough to strike gasoline tank.

To guard against the possibility of dust entry be sure to thoroughly sear the entire area around cracked metal and the reinforcing plate with sealer or undercoating material.

The Part Number 2168219 Rear Compartment Floor Panel Reinforcing Kit is available on regular Parts Orders from the Zone or Distributor under whom you operate and contains the following items:

REQ. PART NO. NAME

1 216735 Rear Compt.Floor Panel Reinforcing Plate12 170794 " " " " " " Bolt12 71443 " " " " " " Nut12 71316 " " " " " " P/W12 71730 " " " " " " L/W

- - - - - - - - - - - - - - - - - - - - - - - -

E. J. BLUM


SEALTHROUGHLY

ORDERFROMZONE ORDISTRIBUTOR


AND INFORMATION

BULLETIN

Number

Date

Subject


FORM 11053

TO ALL DEALERS:

A change recently entered production in the carburetion of the six cylinder engine to compen-sate for a lean mixture resulting from mounting the carburetor in a vertical position and revising the distributor automatic advance curve. This involves the use of different carburetor metering rods on which the economy step has been changed and new idle by-pass plugs as follows:

OLD NEW

Carburetor Metering Rod 75-610 75-686Idle By-Pass Plug 11-B-167 11-B-159

Carburetors incorporating these changes can be identified by the part number WDO-647SA stamped on the metal tag attached to the body. (Tag stamping on carburetors previous to this change was WDO-647S.)

If excessive engine "stumbling" or hesitation is encountered at speeds of 15-17 miles per hour on cars carrying the earlier type carburetor (tagged 647S) and distributor having the revised spark ad-vance (No. IGS-4213A-1 on name plate), the new parts listed above should be installed. This can eas-ily be done without removing the carburetor from the engine by taking off the air cleaner and air horn assembly which gives access to the by-pass plugs and metering rods.

The material required for making this carburetor changeover consists of two Part Number 75-686 Carburetor Metering Rods and two Part Number 11-B-159 Idle By-Pass Plugs per car, which can be procured from the parts stock of the Zone Office or Distributor under whom you operate by or-dering Part Number 302838 Carburetor Metering Rod and by-Pass Plug Kit.

E. J. BLUM


(THIS BULLETIN AS WRITTEN IS BEING MAILED TO SERVICE STATION AGREEMENTHOLDERS AS BULLETIN NO. 91.)

16

7-25-49

CARBURE-TIONCHANGE

PARTSINVOLVED

TAG IDENTIFIESCARBURETOR

CORRECTWITH NEWPARTS

ORDER MATERIALFROM ZONEOFFICE ORDISTRIBUTOR


AND INFORMATION

BULLETIN

Number

Date

Subject


FORM 11053

TO ALL DEALERS:

Within a short time you will receive your copies of the first issue of the "Hudson Service Merchandiser" a new publication devoted to the interests of everyone engaged in the servicing of Hud-son cars.

This new magazine will be printed and distributed to the field once each month and contain information relating to Parts & Accessory Merchandising, Service Promotion, Owner Relations activi-ties, and of course, Technical and Mechanical information covering service and repair methods and special tools and equipment. We are very sure the field will welcome this information and that the new Magazine will enjoy even greater popularity than the earlier publication which was discontinued dur-ing the war years.

We want to impress everyone in your service organization with the fact that this Magazine is published for the benefit of Service and Parts personnel, and in order that it may fulfill its purpose ful-ly, it is most important that we get some help-from the man on the firing line. So please send in regu-larly, for the attention of the Editor, Hudson Service Merchandiser, your contributions in the form of comments and suggestions on service helps', short cuts and new methods you have found helpful in doing a job better or in shorter time. Also remember, a picture is worth a thousand words so if you can send in a sketch or photograph, so much the better.

Distribution of the "Hudson Service Merchandiser" will be made by the Zone Office or Dis-tributor under whom you operate and enough copies will be sent to provide one for each member of your organization. Lack of information concerning the number of employees you have may result in a discrepancy in distributing the first issue, therefore, be sure to notify your Zone Office or Distributor as to whether the quantity sent you was correct or if fewer or more books are needed.

E. T. BLUM


(THIS BULLETIN AS WRITTEN IS BEING MAILED TO SERVICE STATION AGREEMENT HOLDERS AS BULLETIN NO. 95.)

17

8-1-49

NEW SER-VICE PUBLI-CATION

COVERSSERVICE AND PARTSACTIVITIES

YOURMAGAZINE -HELP BYSENDINGINMATERIAL

DISTRIB-UTED BYZONE OFFICERSANDDISTRIBU-TORS


AND INFORMATION

BULLETIN

Number

Date

Subject


FORM 11053

TO ALL DEALERS:

Reports have been received from the field from time to time, concerning difficulty encountered when making installation of vacuum type fuel pumps due to incorrect positioning of the pump on the crankcase caused by using the wrong kind or number of gaskets and spacers.

In some instances this resulted in interference which caused breakage of the fuel pump body while in others the pump arm travel was restricted sufficiently to prevent proper pump operation. This detail is especially important when installing the mechanical type fuel pump as a replacement for the Auto Pulse electric pump used on some of the 1946 cars.

When making installation of a fuel pump after removal for repairs or any other reason, the proper complement of gasket, spacer and baffle must be used between the crankcase and pump as follows:

STANDARD TYPE FUEL PUMP - Part Number 153270, used on all 1946 and 1947 six and eight cylinder cars require between the crankcase and pump, one Part Number 153275 gasket (.015" thick), one Part Number 153274 steel baffle (.018" thick) and one Part Number 153273 spacer (laminated - .275" thick), placed in the order shown.

COMBINATION TYPE FUEL AND VACUUM PUMP - Part Number 158664 - six cylinder, Part Number 158665 eight cylinder, 1946 and 1947 models. Install Part Number 158666 laminated spacer (.165" thick) next to crankcase followed by 1 Part Number 158667 steel spacer plate (.120" thick) and 1 Part Number 153275 gasket

STANDARD AND COMBINATION TYPE "AC" FUEL PUMPS - 480 and 490 series six and eight cylinder cars Part Numbers 300202 and 300203. Use one Part Number 300204 spacer (.312" thick) between crankcase and pump.

STANDARD TYPE FUEL PUMP - "Carter". Late 490 series six and eight cylinder cars - Part Number 302754. Use one Part Number 300204 spacer (.312" thick) between crankcase and pump.

E . J . BLUM



20

9-29-49

FUELPUMPINSTALLA-TION

CAUSESPUMP DAMAGEANDIMPROPEROPERATION

USE CORRECTGASKETSSPACERSANDBAFFLES


AND INFORMATION

BULLETIN

Number

Date

Subject


FORM 11053

490 Series

TO ALL DEALERS:

A change was recently made in production to minimize the tendency toward air noise or "whistle", sometimes encountered on the 480-490 Series six cylinder models during idling and low speed opera-tion.

This noise is caused by the passage of air through the carburetor automatic choke heater tube pressed into the exhaust manifold, the upper end of which is connected by a pipe to the carburetor climatic control. In remedying this condition, the heater tube has been redesigned and its lower end is formed with a taper by swaging and reducing the inside diameter.

In taking care of cars in the field against which complaints have been registered only the later type tube should be used, installing it with the tapered end down and flush with the bottom of the exhaust manifold. The Part Number (300083), remains the same as heretofore and all orders placed with the Factory Parts Department for this item will be filled with the later type part.


(THIS BULLETIN AS WRITTEN IS BEING MAILED TO SERVICE STATION AGREEMENT HOLDERS AS BULLETIN NO. 124).

22

10-19-49

AIRNOISE

HEATERTUBEREDESIGNED

CORRECTWITHLATERTYPE TUBE

1951 - “A” Series

Number 11 - Radio Interference Number 13 - Radio Speakers Boxed Separately Number 14 - Cylinder Head Interchange



AND INFORMATION

Number

Date

Subject

FORM 11053

TO ALL DEALERS.

Some reports have been received from the field concerning noisy radio re-ception caused by the operation of the voltage regulator on the new type constant voltage fuel and temperature gauges used on the current Hudson models.

Investigation has shown that this interference condition in the majority of cases is attributable to a poor ground connection at the antenna lead cable shielding, permitting the antenna circuit to pick up noises resulting from the opening and clos-ing of the gauge voltage regulator points. This may be caused by either the hex nut used with a lock washer under the instrument panel to secure the antenna lead insu-lator and sleeve being loose, or to the knurled nut holding the upper end of the an-tenna cable to the sleeve, not being properly tightened.

Adjustment of the antenna trimmer when preparing the car for owner deliv-ery is a detail upon which satisfactory operation of the radio is greatly dependent, both from the standpoint of reception quality and ability to get volume from weak or distant broadcasting stations. This operation is a "must" item and is necessary due to the capacity characteristics of the individual antenna.

Aligning or "trimming" the antenna is a simple operation which can be done in a few minutes in the following manner:

Extend the antenna to its full height, turn on the receiver and allow it to op-erate for approximately fifteen minutes to reach normal operating temperature. Tune in a weak station near 1200 K.C. on the dial. With a small screw driver, engage slot-ted screw on right side of receiver (immediately below antenna socket) and turn to right or left until maximum volume is obtained.


11

3-12-51

RADIOINTERFERENCE

CAUSED BYPOOR GROUND

ANTENNA MUSTBE “TRIMMED”

QUICKLYPERFORMED

ADJUST FOR MAXIMUMVOLUME



AND INFORMATION

Number

Date

Subject

FORM 11053

TO ALL DEALERS:

Beginning with car number 118185 shipped from the Factory on June 29, all cars equipped with radio have the speaker disconnected and contained in a cardboard box placed in the rear compartment of tile car. The speaker grille cover, however, is mounted on the top of the instrument panel over the speaker opening and is retained by its four at-taching screws.

On radio equipped cars carrying the above or higher serial numbers, it is necessary, therefore, to install the speaker after the car arrives at destination. This can be done in a few minutes time and is accomplished by merely taking out the four screws and removing the grille cover and placing the speaker leads into the pin jacks mounted on the speaker assembly. Then lower the speaker into position and line up with the holes in the instru-ment panel,, replace grille cover over speaker and securely tighten the four screws.

With the adoption of the method of shipping the speaker disconnected from the receiv-er, we have discontinued the earlier practice of removing the "A" lead wire assembly and placing it in the glove compartment. No other work is necessary in getting the radio ready for operation.


13

July 3, 1951

RADIOSPEAKERSBOXEDSEPARATELY

EASILYINSTALLEDINFIELD

“A” LOADWIRE NOWCONNECTED



AND INFORMATION

Number

Date

Subject

FORM 11053

TO ALL DEALERS:

Because of the interchangeability of cylinder heads on all six cylinder engines it is es-sential that the proper cylinder head and gasket be selected to guard against low power out-put from low compression ratios or rough engines due to compression ratios higher than practical with the available fuel.

The following is a table showing the limitation of interchangeability for the cylinder heads in current production.

IDENTI- STANDARD HIGHPART NUMBER MATERIAL FICATION* FUEL OCTANE FUELS

304618 Cast Iron 232 4A 5A-6A-7A 304622 Aluminum 232 4A 5A-6A-7A 304620 ** Cast Iron 262 5A-6A 7A 304624 ** Aluminum 262 5A-6A 7A 304629 *** Cast Iron H-145 7A 304631 *** Aluminum H-145 7A 305854 *** Cast Iron H-145 7A

* Numbers cast on top of head near front end.

** Use of these heads on 4A will reduce compression ratio and give less than rated horsepower.

*** Use of these heads on 4A-5A or 6A will reduce compression and give less than rated horsepower.


14

7-2-51

CYLINDERHEAD INTERCHANGE

CYLINDERHEADDATA

1952 - “B” Series

Number 1 - New Car Appearance (Paint Care) Number 2 - Chrome Protection 1952 Models Number 3 - Technical Information B Series Number 4 - OPS Flat Rate Approval Number 6 - Twin-H Carburetor Adjustment 7B Models



AND INFORMATION

Number

Date

Subject

FORM 11053

TO ALL DEALERS:

In the preparation of new cars for delivery to owners, for demonstrator use or for showroom display, the matter of appearance is obviously of first importance and if the owner or prospect is to be favorably impressed, the clean up work involved in getting the car ready must be carefully and thoroughly done.

Appearance conditioning starts with the washing of the car followed by a polishing treat-ment when necessary to bring out the beauty of the finish and protect t,ie surface against the elements. Hudson cars are finised in high grade lacquers which, when given proper pre-liminary and -maintenance treatment, will give satisfactory and lasting service. Like all fin-ishes, lacquers require some time after application to harden or set and while this aging process is going on (approximately the first 60 days) extra care must be used when washing and polishing, to avoid permanent damage to the finish.

Dirt, soot, grit and other foreign matter, which accumulates on the finish during transit and storage, has a detrimental effect and it is, therefore, important that the car be washed as soon as possible after arrival. Washing should be done with cold or slightly warm water and never in bright sun light or while the metal Surfaces are hot.

The washing operation should tend to lift the dirt from the surface rather than rub it in. Use a sponge or washing mitt and keep the surface flushed with plenty of water applied ahead of and not behind the sponge or mitt. This will minimize abrasion or scratching from the dlrt. Ordinarily, washing with water alone will bring out the original luster and shine.

If however, the car has been exposed a long time or the finish is spotted or greasy, a detergent cleansing agent such as Hurricane Luster Shampoo (Part # HS-207199) should be used in the water to remove the accumulations. Never use soap for car washing as this causes streaks and deposits a film on the finish which is difficult to remove without abra-sives. After washing rinse off car thoroughly using a hose and clean water.

If careful washing does not satisfactorily restore the original luster and beauty of the finish, the car should be polished with Liquid Glaze. When polishing a new car, particu-lar care must be taken to prevent damage to the finish while it is in the "green" state and aging.

(OVER)

1

Dec. 27, 1951(1952 Series)

PaintCare

NEW CARAPPEARANCE

CAREFULWASHING ANDPOLISHING AMUST

WASH CAR UPONARRIVAL -SURFACES MUST BE COLD

USE PLENTY OFWATER- AVOIDSCRATCHING

DO NOT USESOAP

POLISH WITHLIQUID GLAZE

Subject- 2 -

In the polishing operation, Liquid Glaze Cleaner (part # 229066) is first applied. This will take off any traces of film or dirt that were not removed in washing and prepare the surface for the Liquid Glaze Sealer. The cleaner should be used by saturating a folded cloth and applying it to the car in 3 x 5 foot sections, wiping off each section before it dries, with a dry, absorbent cloth. The application and drying should be done by hand only.

Following the use of the cleaner, Liquid Glaze Sealer (Part # 229069) should be applied. This is done by pouring the sealer on a dry pad and spreading it over the surface thinly in long strokes, Allow it to dry thoroughly, then briskly wipe entire surface by hand with a clean, soft cloth.

The final step in polishing the new car consists of applying Liquid Glaze sealer Press (Part # 229070) which is designed to smooth and harden the sealer, give a high lustrous finish and remove traces of the sealer from moldings and crevices. It is applied by pouring a small amount of the material on a pad of cheese cloth which has previously been moistened in water and wrung out. Wipe dry with clean cheese cloth, while liquid is still moist, to bring out the full luster. This completes the polishing operation.

The application of the foregoing materials should be done by hand, using moderate pres-sures to avoid damaging the "green" finish. Do not use a buffer.

If the car has been in storage or exposed to the elements a considerable length of time and the finish shows sign of deterioration, use Liquid Glaze Super Sheen Paste (part # 229068) af-ter washing instead of the cleaner. This material,, which does a faster cleaning job, may be used on such cars since the finish has had an opportunity to harden and set.

On cars where the finish has aged and the paint has set, a buffer may be employed in the polishing operations. The use of the buffer, however, should be confined to skilled and careful workmen and equipment using the smaller sizes of buffing wheels is recommended. An 8" wheel is the maximum size that should be used and even this requires expert handling to avoid going through the lacquer into the primer.

To insure owner satisfaction and forestall complaints of poor finish, it is recommended that Hudson Dealers make every effort to sell the new car purchaser the Liquid Glaze Treat-ment before he takes delivery of his car. He should also be sold on the advantages of having the Dealer repeat this protective treatment at six-month intervals thereafter.

_ _ _ _ _ _ _ _ _ _ _ _

E. J. BLUM


PREPARESURFACESWITHCLEANER

FOLLOW WITH SEALER - APPLY BYHAND

COLOR DRESSAPPLICATIONCOMPLETESJOB

AVOID HEAVYPRESSURE ON“GREEN” FINISH

SMALL BUFFING WHEELSRECOMMENDED

SELL LIQUIDGLAZETREATMENT



AND INFORMATION

Number

Date

Subject

FORM 11053

TO ALL DEALERS:

Governmental restrictions, resulting from the shortage of critical materials re-quired for the defense effort, have necessitated the adoption of new plating specifica-tions by the entire automotive industry for chrome, and other bright work.

The new "Copper Chrome" finish which is now being used calls for smaller amounts of the scarce metals and, the parts carrying this plating can be distinguished from those plated by the earlier conventional chrome plating process, by the slightly different, satiny finish. Since the "Copper Crome" parts will not withstand prolonged exposure, they are coated with clear, baked-on enamel for protection.

Bright work, plated according to the new regulation (N.P.A. Order M-14), also requires different treatment and the use of soaps, cleaners, abrasives and polishes must be avoided to prevent damage to the enamel coating. Buffing wheels, of course should never be used.

As soon as the new car is received, it should be carefully washed to remove all traces of salt, dirt,, etc. which may have accumulated in transit. After washing, apply a good coat of Hudson Wax (part No. HS-111939) to the parts for protection. This must be done by hand avoiding unnecessary pressure which might damage the enamel,

Hudson Wax is the only material that should be used on the now bright-work and if properly applied will adequately protect the "chrome" during storage. When the car is taken out of storage and washed before delivery to the purchaser, the waxing treat-ment should be repeated.

_ _ _ _ _ _ _ _ _ _ _ _


2

Dec. 27, 1951(1952 Series)

CHROMEPROTECTION -1952 MODELS

RESTRICTIONSREQUIRE NEWPLATING-METHODS

DIFFERENTAPPEARANCE

CLEANERS ANDABRASIVESMUST NOT BEUSED

WASH PROMPTLY UPON ARRIVAL

USE WAX ONLY FOR PROTECTION



AND INFORMATION

Number

Date

Subject

FORM 11053

TO ALL DEALERS:

You are to continue to use all "A" Series (1951) Procedure Manuals, Flat Rate Manuals, Tune-up Specifications etc., in servicing all "B" Series (1952) cars which are now being shipped to the field.

_ _ _ _ _ _ _ _ _ _ _ _


(1952 Series)

3

Jan. 8, 1952

COMPLETETECHNICALINFORMATIONFOR “B” SERIES



AND INFORMATION

Number

Date

Subject

FORM 11053

TO ALL DEALERS:

The Office of Price Stabilization, Washington, D. C.,, has issued approval of the 480, 490, 500 and "A" Series Flat Rate Manual., subject to the conditions out-lined in Ceiling Price Regulations 34, Supplementary Regulation 3, Amendment 3, dated April 1, 1952. This Amendment became effective April 7, 1952, and the sec-tion applicable to the Hudson Flat Rate Manual is reproduced on the back of this Bul-letin.

Please see that this information is passed on to the proper individuals in your Service Department, and that you attach these instructions (appearing on the back of this Bulletin) to the Flat Rate Manuals in use by your Service Department personnel, as requested.

_ _ _ _ _ _ _ _ _ _ _ _


(S E E B A C K O F T H I S B U L L E T I N)

4

April 18, 1952

O. P. S.FLAT RATEAPPROVAL

ADVISEPERSONNEL -POST INSTRUCTIONSPROMPTLY

1953 - “C” Series

T-195 - Number 2 - Power Steering Operation T-158 - Number 5 - Radio Speakers Installed at Factory



AND INFORMATION

Number

Date

Subject

FORM 11053

TO ALL DEALERS AND SERVICE STATION AGREEMENT HOLDERS:

So the purchaser of a Hudson car equipped with power steering will realize the full benefits of this option including the great reduction in physical effort in handling and steering, it is essential that the steering gear and other parts of the steering system operate without undue friction.

Checking the operation of power steering on every new car equipped should there-fore be included in the new car pre-delivery inspection. This involves driving the car a short distance making several right and left turns around corners noting carefully whether the steering tends to straighten out in the normal manner upon completing the turn. In the event the car shows a tendency to remain in the turn or requires more than usual effort at the steering heel, the following check should be made:

1. Loosen steering gear housing to frame bolts until they are just finger tight.

2. Loosen jacket tube bracket at instrument panel.

3. Loosen two bolts under instrument panel attaching dash upper and lower braces to front pillar cross member, also two screws holding the lower brace to dash.

4. With jacket tube bracket assembled loosely to jacket tube, tighten bracket mounting bolts.

5. Tighten steering housing to frame bolts.

6. Tighten bolts holding upper and lower dash braces together under instrument panel and at dash.

CHECK FOR ALIGNMENT AND ADJUSTMENT

1. Turn steering wheel one and one-half turns to right or left off high point or straight ahead position.

2. In this position the steering wheel should move within the limits of the lash between the worm and roller with a pull of from one to four ounces applied

(OVER)

2

Sept. 16, 1953

POWER STEERINGOPERATION

CHECK DURINGPRE-DELIVERYINSPECTION

CHECK FORALIGNMENT

CHECK COLUMNADJUSTMENT

No. T-195

Subject

(2)

to the rim of the steering wheel. If greater effort is required, friction in the column should be reduced by adding a shim or shims between the housing and the lower cap.

A. If friction still remains excessive, pull steering wheel and check for bent main column tube. If check shows that tube has more than 1/4" run out or eccentricity at upper end it should be replaced.

3. Disconnect rear end of drag link at pitman arm. Place steering gear on high point or straight ahead position and measure pull required at rim to turn steering wheel. If this exceeds fourteen ounces, the gear shaft should be adjusted endwise with the adjusting screw in the housing side cover.

Place front wheels on turn plates in the straight ahead position. With a scale hooked to the center rib of the tire tread, measure pull required to turn front wheels with drag link discon-nected. The maximum effort to do this should not exceed twenty eight pounds. If greater pull is required, lubricate and free up stiff spindle pivot pins and tie rod ends if neccessary and in-crease caster to one and one-half degrees maximum.

Check fluid which s'hould be maintained at level mark on reservoir. Use only Hudson Hydra-Matic Drive Fluid or other approved Type A Automatic Transmission Fluid meeting Armour Qualification specifications.

E. J. BLUM




AND INFORMATION

Number

Date

Subject

FORM 11053

TO ALL DEALERS AND SERVICE STATION AGREEMENT HOLDERS:

The practice of shipping the speaker assemblies of radio equipped cars separately in the locker box has been discontinued in production and all cars now have the speakers installed in position before shipment from the factory.

However, to prevent the use of the radio while the car is in transit, we are now removing the vibrator assemblies at the factory from all radios after installation and testing. These units are either paper wrapped or placed in cardboard boxes and shipped separately in the locker box.

Arrange to check each radio equipped car for this item on arrival and install the vibrator assembly in the receiver. This is easily done from underneath since the bottom of the radio is exposed and it is only necessary to line up the large and small pins on the vibrator with the corresponding holes in the receiver when pushing the vibrator in position.

The vibrator assemblies used in the 1953 six tube radios are the same as those used in the two eight tube models.

_ _ _ _ _ _ _ _ _ _ _ _

E. J. BLUM


5

March 9, 1953

RADIO SPEAKERSINSTALLED ATFACTORY

VIBRATORSSHIPPED IN LOCKER BOXES

CHECK CARSANDINSTALLVIBRATORS

VIBRATORSINTERCHANGE-ABLE

No. T-158

General Technical Policies & Information Bulletins...

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