anual 1066, Gear Drive &966 tic Drive 1 of 2 · &966 tic drive 1 of 2 .ii::"i~i\il.c~ inc. without...

$: anual 1066, Gear Drive &966 tic Drive 1 of 2 · &966 tic drive 1 of 2 .ii::"i~i\il.c~ inc. without the authorization of :;cessc)rs. international harvester and it's successors the$
anual

1066, Gear Drive &966

tic Drive 1 of 2

.II::"I~I\IL.C~ INC. WITHOUT THE AUTHORIZATION OF :;CESSC)RS. INTERNATIONAL HARVESTER AND IT'S SUCCESSORS

THE QUALITY OR ACCURACY OF THIS MANUAL.

CONTAINED AND USED HEREIN ARE THOSE OF OTHERS, PTIVE SENSE TO REFER TO THE PRODUCTS OF OTHERS.

IH-S-

http://www.jensales.com/products/farmall-tractor-service-manual-ih-s-766-966.html

766 Serial Number located on left side of

clutch housing Color Location: MFG Color Name:

Year Beginning Number BODY ANTIQUE 2150 RED

1971 7101 TRIM ANTIQUE WHITE

1972 7416 WHEELS ALUMINUM

1973 9611

1974 12376

1975 14630

1976 16840


Year Beginning Number

1971 7101

1972 11815

1973 17794

1974 22526

1975 28119

1976 31772



Year Beginning Number TRIM ANTIQUE WHITE

1971 7101 TRIM ALUMINUM

1972 12677 BODY ANTIQUE RED

1973 24205

1974 34949

1975 46855

1976 56672



Year Beginning Number BODY ANTIQUE 2150 RED

1971 7101 TRIM ANTIQUE WHITE

1972 70408 WHEELS ALUMINUM

1972 10408 Farmall

1973 15533 Farmall

1974 19746

1975 25404

1976 29516


Generol Contents Standard Torque Data for Nuts and Bolts ..................... .

Standard Torque Data for Hydraulic Tubes and Fittings .......... .

Special Service Tools Required .............................. .

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Page IV

V

VI

~:,gl0,'AJ~R*t~gNQltlg~~N~4:N Q •.. ·,~PLIIIlNQ~f~I·~E. TRA(TOR ~,¢.¥,~~~~;l%lj;Yi-~4~:;&t,~i.i;,),;4I1i1:'k.;';:%4;;'_f~X;h';\'i""'+J;'-j:'JA"<41,Jh:-"~~,:)/,4,,,,,,,,,,/,,,;,,,~~,,,<,,&,,,.,'~<,,kJ~Y'",,;;:'''';0~,>y~,~~;j";i>;3.1y£s,'j",-,\ "0--" _ _ ~J"-_ _, ~,,_: :~~>;;"';"'o~"'''-

1 1

~ >,-,;;q'/,,¢>:',~;; r7~!<- ,;' ""-",;:,,",,/;:-:;:;:'';:'- ,0" ,,~-

1:3 INDEPENDENT POWERTAKE~OFF ~,'"L;:St;;"{ ,~,"<',:, ;,~- -~;""rd,-:'" < ':;" 'i~'-\;:~l;:~:::;L:,-:;~;;);:~~'~~:;-';><,~

I 1 4 1 HfDRAIJil( SYSTEM

1 51 TESTING HYDRAULI( SYSTEM III


Section 2

FRONT END, AXLE AND WHEELS

CONTENTS

SPECIAL TORQUES ••••.••.........•...•••...•..•.......•...

TRICYCLE FRONT AXLE

Removal and Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ADJUSTABLE WIDE FRONT AXLE

Removal ..•. Disassembly .

Axle Spindle and Hub .

Inspection and Repair Reassembly

Spindle and Hub Axle

Installation Adjusting Toe-In

ALL-WHEEL DRIVE

Specifications Description. Wheel Ends ••

Disassembly Inspection and Repair .. Reassembly ......•

Adjusting Steering Stops and Toe-In Differential. • .

Disassembly. Inspection .. Reassembly

Drive Line Service. . Transmission .

Removal and Disassembly. Inspection ... Reassembly

2-1

Page

2-2

2-2

2-3 2-4 2-4 2-6

2-8 2-9 2-9

2-11

2-13 2-15

2-16 2-16 2-18 2-18 2-21 2-21

2-24 2-24 2-24 2-29 2-29

2-32 2-34 2-34 2-34 2-34

•


3-12

6. Remove the metering element (1), spacer (2) and drive link (3) as an assembly.

7. Separate the drive link (3) by sliding the metering element (1) on the spacer (2) so the drive link teeth clear the spacer hole.

1. Metering element 2. Spacer 3. Drive I ink

8. The metering element (1) is a matched set which includes the stator (2) and rotor (3) with six springs (4) and vanes (5).

1. Metering element 2. Stator 3. Rotor 4. Spring 5. Vane

9. Reverse the valve body in the vise with the input shaft up.

10. Using a center punch or a scribe, mark the valve body (3) and upper cover assembly (2).

11. Remove the four special cap screws with 5/16"-12 point socket.

1. Scribe mark 2. Upper cover 3. Valve body


Section 4

ENGINE

CONTENTS

Information contained in this section on the 1066 tractor also applies to the Model 100 Hydrostatic.

ENGINE REMOVAL AND INSTALLATION

Page

766, 966, 1066 and 1466 Tractors • • • • • • • • • • • • • • • • • • • • • • • • • • . 4-2

1468 Tractors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

NOTE: For specifications and complete overhaul procedures, refer

to the following Blue Ribbon Service Manuals:

766 gasoline tractor refer to GSS-1387.

766, 966, 1066 and 1466 diesel tractors refer to GSS-1427.

1468 tractor refer to GSS-1432.

GSS·1431K (Rev. No.1) Printed in United States of America

4-1

I


Section 8

CLUTCH AND FLYWHEEL

CONTENTS Information contained in this section on the 1066 tractor also applies to the Model 100 Hydrostatic.

Page

SPECIFICATIONS • • • • • • • • • . • • • . • • • • . • • • • • . • • • • • • • • • • 8-2

REMOVAL •••••••••••••••••.••••••••••••••••••••• 8-2

DISASSEMBLY • • • • • • • • • • • • • • • • . . • • • . • • • • • • • • • • . • • •• 8-3

I NSPECTION AND R EPAI R .••.••••.•..•••.•••••••.••••• 8-4

REASSEMBLY AND ADJUSTMENT •••••••••••••••••••••.•• 8-6

INSTALLATION ••••••••••••••••••••• • • • • • • • • • • • • • •. 8-8

CLUTCH LINKAGE ADJUSTMENT •••.•••••••••••••••••••• 8-9

Engine Clutch Adjustment • • • • • • • • • • • • • • • • • • • • • • • • • • • • • 8-9

Transmission Brake Adjustment. • • • • • • • • • • • • • • • • • • • • • • •• 8-9

Tractors Equipped with "TA" Attachment. • • • • • • • • • • • • • • • • •• 8-10

Neutral Starting Switch Adjustment • • • • • • • • • • • • • • • • • • • • • •• 8-10

HYDRAULIC CLUTCH CONTROL

~rvice ......•...•.....•.•...•.••.•.....•....... 8-11

HYDRAULIC CLUTCH CONTROL LINKAGE ADJUSTMENT

Engine Clutch Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 8-14

Transmi ssion Brake Adjustment ..•..•••••....•.••.•..... 8-15

Tractors Equipped with "T A" Attachment. . . . . • . . . • . . . . . . . . .. 8-15

Neutral Starting Switch Adjustment. . . . . . • . . . . . . . . . . . . . . . .. 8-15

GSS-1431K (Rev_ No.1) Printed in United States of America

8-1


Section 9

TRANSMISSION

CONTENTS

Page

SPECI F ICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 9-4

Special Torques. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 9-5

POWER FLOW (Gear Drive) ................................. 9-6

CLUTCH HOUSING ASSEMBLY WITH TORQUE AMPLIFIER AND SPEED TRANSMISSION • . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 9-8

Removal of Clutch Housing ... . . . . . . . . . . . • . . . . . . . . . . . • . . . .. 9-9

Disassembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 9-13 Speed Transmission. . . . . . . . . . . . • . . . . . . . . . . . . . • . . . . . . .. 9-13 Torque Amplifier. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 9-16

Reassembly and Installation. . . . • . . • . • • . • • • • . . • . . . • • • . • • . • .. 9-20 Torque Amplifier. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 9-20 Speed Transmission. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 9-24

Adjustments - Gear Drive . . . • . . . . . . . . . • . . . . . . . . . . . . . . . . . .. 9-30 Shift Linkage and Park Lock Adjustment . . • . . . . . . . . . • . . . . . . .. 9-30 Adjusting TA Operating Linkage. . • . . . . . • . . . . . . . . . . . • . . . . .. 9-32

Clutch Linkage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 9 -33 Engine Clutch Adjustment . . . . . . . . . . . . . . . . . . . . . . • . • . . . . .. 9 -33 Transmission Brake Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . .. 9-34 Tractors Equipped with "TA" Attachment. . . . . . . . . . . . . . . . . . . .. 9-34 Neutral Starting Switch Adjustment. . . . . . . . . . . . . . . . . . . . . . . .. 9-34

Hydraulic Clutch Control Linkage . . . . . . . . . . . . . . . . . . . . . . . . . . .. 9-34A Engine Clutch Adjustment . . . . . . . . . . . . . . . . . . . . . . • . . . . . . .. 9-34A Transmission Brake Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . .. 9-34B Tractors Equipped with "TA" Attachment. . . . . . . . . . . . . . . . . . . .. 9-34B Neutral Starting Switch Adjustment. . . . . . . . . . . . . . . . . . . . . . . .. 9-34B

HYDROSTATIC DRIVE

PrinCiples of Hydrostatics. . . • . . . . . . . . . . . . . . . . . . . . . . • . . . . .. 9-35 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 9 -3 5 How it Works

GSS-1431K (Rev. No.1)

9-1

9-37

Printed in Un ited States of America


Hydrostatic Drive Hydraulic System ••

Flow of Pump No. 1 (Power Steering and Charge Circuit)

Flow of Pump No.2 (Servo, Power Brakes, Seat and Charge Circuit) ........................ .

Flow of Pump No. 3 (Hitch, Cooler and Lubrication Circuits) ..•••....••.

Hydrostatic Drive Components

Multi-Valve

Multiple Control Valve (MCV)

Servo Cylinders ••• ..... . . . . . . . . . . . . . . . . . . Center Section (with Shuttle Valve, Check Valves, and High Pressure Relief Valves) •••••••••••••.•..

Foot-N-Inch and Drive Control Valves.

High Temperature and Pressure Warning System

Speed Ratio Lever • • • . . • • • • • • . . . . . . • . . .

Operating Principles of Hydrostatic Drive

. . . . . . . . . . . .

Neutral . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Forward.

Reverse. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. :. Forward (Decelerating).

Trouble Shooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Fluid •.

Filters.

Driving Test (without Gauges)

Anti-Coast Valve .•.

Reverse Deceleration.

Performance Controls

Checking Servo Response

9-2

Page

9-39

9-39

9-40

9-40

9-41

9-41

9-42

9-44

9-46

9-47

9-48

9-49

9-49

9-49

9-50

9-50

9-50

9-51

9-51

9-51

9-52

9-54

9-54

9-54

9-55


Testing with Gauges •••••• . . . . . . . . . . . . . . . . . . . . . . . ....... . Charge Circuit Pressure.

Steering Pressure and Flow.

Servo Control Pressure

· . . . . . . . . . . . . . . . . . . . . . . . . . . . . · . . . . . . . . . . . . . . ............. .

. . . . . . . . . . . . . . . . . . . . . . . . ....... . Drive Pressure . . . . . . . . . . . . . ....... . . . . . . . . ..... Isolating Foot-N-Inch and Drive Control Valve

High Pressure Relief Valves

Foot-N-Inch Valve ••••••.

· . . . . . . . . . . . . . . . . . . . . . . . . . . . . · . . . . . . . . . . . . . . . . . . . . . . . . . · . . . . . . . . . . . . . . . . . . . . . . . . . Checking Deceleration Pressure.

Measuring Charge Flow •••• • • • •

Checking for Oil Cooler Restriction

Cleaning the Oil Cooler. . . • • .

Checking Lubrication Pressure

Adjustments - Hydrostatic Drive

Adjusting Foot-N-Inch Valve

Adjustment of Servo Control

Removing and Replacing Components.

High Pressure Relief Valves

Check Valves ••••••••••••

. . . . . . . . . . . . . . . . . . . . . . . .

Shuttle Valve. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .... Drive Control Valve

Foot-N-Inch Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Multi-Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Multiple Control Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Servo Cylinders and Control Cam · . . . . . . . . . . . . . . . . . . . . . ....

Removal an..d Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Page

9-58

9-58

9-59

9-60

9-61

9-63

9-64

9-66

9-66

9-67

9-69

9-70

9-70

9-71

9-71

9-72

9-73

9-73

9-75

9-76

9-76

9-78

9-78

9-80

9-81

9-82

Cleaning, Inspection and Repair • . • • • . . • . • . • • • • • . • • • • • . • • • • • • 9-104

Reassembly and Installation. • • • • • • . • • • • • • • • • • • • • . • • • • • • • • • • 9-107

Clean-Up Procedure After Major Overhaul. • • • • • • • 9-125

GSS-1431K (Rev. No.1) Printed in United States of America

9-3


Page

RANGE TRANSMISSION

Removal and Disassembly ................................. 9-127

Inspection and Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-138

Reassembly .......................................... 9-139

Countershaft and Reverse Idler Shaft. •.••.•••..••.•••••••••• 9-139

Power Take-Off Driven Shaft Assembly •••••••••••••••••••••• 9-143

Main Shaft Assembly .................................. 9-143

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-146

SPECI FICATIONS

Speed transmission Countershaft nut torque (use FES 107 socket) • • • . • . • • • • • • • • • • • •• 300 ft. lbs.

Torque amplifier Lock up carrier cap screw torque .••••••••••••••••••••••••• 19-21 ft. lbs. Clutch carrier nut torque ••••••••••••••..••.•..•••••.•• ; 53-60 ft. lbs.

Range Transmission Main shaft bearing cage cap screw torque .••••..••.•...••..•••• 85 ft. lbs. Main shaft retaining nut torque ..••.•.••....•••.••••••.•••••• 100 ft. lbs.

Hydrostatic Drive

Pressures Drive pressure - psi . . . • . • • • . • • . . • • • • • . • • • • . • • • • • • • •• 6000 ± 50 max. Charge pressure at 1700 rpm

S-R lever in neutral • • . . • • • . . • • . • . • • • . • • . • • • • . • • • • •• 440 to 500 psi S-R lever in forward or reverse. . . • • • • . • • . • • • • • • • • • • • •• 170 to 215 psi

Servo pressure 1700 rpm and above (S-R lever in forward or reverse) 375 to 410 psi Deceleration pressure ••.••••..•.•••••••••.••••••.••• 1500 to 1800 psi


9-4


1. C-clamps 2. Snap ring

9-19

5. The one-way clutch can then be removed from the T A drive output gear by removing the seal ring. The TA drive output with ball bearing and spring loaded lubrication baffle can also be removed from the TA and IPTO carrier.

6. Use C-clamps (1) to compress the lock-up clutch springs and remove the large snap ring (2). Lift the lock up clutch plates out of the TA lock up carrier. Remove the three 7/16 inch bolts and remove the direct drive back plate and clutches. Remove the three 5/16 inch cap screws and remove the T A lock-up assembly.

NOTE: The piston carrier is a "slip" fit on the clutch shaft and if the carrier is removed, it must be properly timed to align the fluid supply holes in the shaft and carrier.


Section 10

DIFFERENTIAL CONTENTS


Page

SPECI FICATIONS • . • • • . • . . • . . . . • . . • . • • . . • • . • • • • • • . • • • • • 10-1

SPECIAL TORQUES (Foot Pounds) • • • • • • • • • • • • • • • • • • • • • • • • • • • • 10-1

REMOVAL AND DISASSEMBLY ••••••••••••••••••••••••••••• 10-2

INSPECTION AND REPAI R •••••••••••••••••••••••••••••••• 10-10

REASSEMBL Y •••••••••••••••••••.••••••••.•••••••••.• 10-10

Adjusting Bearings. • • • • . . • • • • • • • . • • • • • • . • • • • • . • • • • • • • •• 10-14 Pinion Shaft •••••• • • • • . • . • • • • • • • • • • • • • • • • • • • • • • . • •. 10-14 Differential •••••..••••••••••.••••••••••••••••••.•. 10-15

Adjusting Bacldash. • • • . • • • • • . • • • • • • • • • • • • • • • • • • • • • • • • .• 10-17

INSTALLATION •.••.•..•.•••..•••.••.•..•.•..•..•..•.. 10-18

01 FFERENTIAL LOCK • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •• 10-22

SP EC I F I CAT IONS Differential lock pressure

Gear drive - psi ... • • • • . . . . . • . • • . • . . • • . • . • • . . . . • • .. 235-280 Hydrostatic drive - psi . . . • . . • . . . • . . . . • • . . • • • . . • . • • . •. 240-300

SPECIAL TORQUES (Foot Pounds)

Differential case bolts nuts • • • . • . • . . . • • . • • • • . . • • • . • . • • • . . •• 112 Range transmission main shaft cage bolts ...•.••..•••••••••..•• 85 Range transmission main shaft nut . . . . . . . • . • • . . . . • • . • • . • • . • •. 100 Differential bearing retainers .......•..•.••••••••..•.•.•... 73

Rear wheel hub clamp Inside bolts. • • • • • • • • • . • • • • • . . • • • • • • . • • • • • • • • • • • • • • •• 200 Outside bolts. . . . . . • • . . • . • . . . . . • • • • . • • . • • • • . . . • . . . . •. 425

Wedge lock wheel bolt. • • • • • • . . . • . . . • • • • . • • • • • . . • • . • • . . . .. 400 Fender mounting U-bol ts . • • • • . . • . . • • . . • • . • • • • . . . . • . • • • . • . • 28

GSS-1431K (Rev. No. 1) Printed in United States of America 10-1


DIFFERENTIAL LOCK

The differential lock is hydraulically actuated and the differential is locked when the operator holds the control valve in the "down" position. As soon as the operator releases the control valve the differential lock is released.

GSS-1431 K (Rev. No.1) 10-22

The valve may be moved to the engaged position at any time without regard as to the forward or reverse motion or speed of the tractor. The same is true of releasing the lock.

The differential lock is designed to give maximum traction when rear wheel slippage is encountered. It is not intended for continuous use or when slippage is not a problem and therefore the unit is "unlocked" whenever the control valve is released.

The control valve for the differential lock receives fluid from the hydraulic brake supply tube. The differential lock pressure for gear drive tractors is 235 to 280 psi. The pressure for hydrostatic drive tractors is limited to 240 to 300 psi by a pressure reducing valve (brake pressure is 400 psi).

Printed in United States of America


Section 11

REAR AXLE, HOUSING AND WHEELS

CONTENTS Information c()ntained in this section on the 1066 tractor also applies to the Model 100 Hydrostatic.

Page

SPECIAL TORQUES •...•.•...•..••• " • • • . . . . . • . . . . . • . • . . 11-1

REAR AXLE AND BULL PINION SHAFT

766, 966 and 1066 (Hydrostatic Drive) Tractors. . • . • • • . • . . • • . • • • 11-2 Removal and Disassembly. • • • . • • • • • • • . • . . . • . • . • • . . . . • . 11-3 Reassembly and Installation. . • • • . • • • • • • • • • • • • . . • . . . • • • • 11-6

REAR AXLE AND BULL PINION SHAFT

1066 (Gear Drive), 1466 and 1468 Tractors ..•••.••..••..•••••. Removal and Disassembly . . • • • • • • • • • . • • • • . • . . . . . . . . . . . Reassembly and Installation •...••••••.•.......••.....••

REAR AXLE BEARING PRE-LOAD ADJUSTMENT •••••••••••••••••

HIGH CLEARANCE DROP HOUSING •••••••••••••••••••••••••

Removal and Disassembly ••••..••..•.•.••.••.••....•.•••

Reassembly •.. . . • • • . . . • . • • • • • . . • • . . • • • . . . . • • . . . . . • .

SPECIAL TORQUES (Foot Pounds)

11-8 11-8

11-11

11-13

11-14

11-15

11-16

Differential bearing retainer . . • . • • . . . • • . • . . . • • . . • . . . . . . • . • . . • . . . .. 73 Rear axle carrier .........•.......•..........•............•.•. 170

Rear wheel hub clamp Inside bolts. . • . • . • . . . . . • • • • • • • • • . • . . • • • . . • . • • . . . • . . . . • • . . •. 200 Outside bolts. • . . . . . • . . . . • . . . . . • . . . . . . It • • • • • • • • • • • • • • • • • • • •• 425

Wedge lock wheel bolts • • • • • • • • • • • • • • • • • • • • • • • • • • • • • . • • . • • • • • • • •• 400 Rim clam.p bolts ••.•••••••••••..••••••••••••.••••.•••••••••••. 255 Rear wheel to hub mounting bolts (loose hub wheel) . • • • . . . • . . . . . . . . . . . • . .. 300 Dual wheel disc to hub bolts. . . . • . . . . . . . . . . . . . • . . . . . . . . . . . . . . . . . . .. 140 Fender mounting U-bolts. • • • • • . • • • . • • . • . • . • • • • • • • • • . • • • • . • . • • . . .• 28

GSS-1431K (Rev. No.1) 11-1

Printed in United States of America


Section 12

BRAKES CONTENTS


Page

SPECIFICATIONS ••••••••••••••••••••••••••••••••••• 0 • 12-1

POWER HYDRAULIC BRAKES

Power Braking (Engine Running). • • • • • • • • • • • • • •••••••••••• 0

Manual Braking (Engine Stopped) ••••• 0 •••••••• 0 •• 0 ••••••••

Bralce Adjusters ..................................... . Removal and Disassembly - 766, 966 and 1066 •••••••••••••••• 0

Inspection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Reassembly and Installation ••••••••••••••••••••• 0 ••••••••

Removal and Disassembly - 1466 and 1468 •••••••••••••• 0 •••••

Inspection. . . . . . . . . . . . . . . . . . . . . . • . . . . . . . . . . . . . . . . . . . Reassembly and Installation ••• 0 • • • • • • • • • • • • • • • • 0 • • • ••••• 0

POWER BRAKE VALVE

12-2 12-4 12-5 12-6 12-7A 12-8

12-10 12-11A 12-12

Removal and Disassembly 0 ••••••••••••••••••••••• 0 ••••• 0 12-14 Inspection and Repair • • • 0 • • • 0 • 0 ••••••• 0 • • • • • • • • • 0 • • • • •• 12-16 Reassembly and Installation 0 0 0 0 0 0 0 0 0 0 0 0 • 0 0 0 0 0 0 • 0 0 0 ••••• 0 0 12-16

BRAKE PEDAL LINKAGE ADJUSTMENT •• 0 ••• 0 0 0 0 •••• : •• 0 •••• 0 12-17

SPECI FICATIONS

Bralce diameter - inches 766, 966 and. 1066. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 1466 and 1468 . . . . . . . . . . . . . . . . . . . . . . . . . . • • • • • . . . • . . . . . . . . .• 11

Bralce pressure - psi 766 . . . . . . . . . . . . . . . . . . . . . . . • . . . . . . . . . . . . . . . . . . . . . . . .. 235-280 966 and 1066 •••••••••••• 0 0 •••••• 0 • 0 0 • 0 0 • 0 • • • • • • • •• 235-280 (G.D.)

390-410 (HoS.) 1466 and 1468 . . . . . . . . . . . . • . . • • . • . . . . . . . . . . . . • . . . . . . . . .. 175-220

Brake adjuster carrier bolts torque (1466 and 1468 only) 0 ••••••••• 0 •• 170 ft. lbs.

GSS-1431 K (Rev. No.1) 12-1 Printed in United States of America


. Section 13

INDEPENDENT POWER TAKE-OFF

SPECIFICATIONS

IPTO

CONTENTS Information contained in this section on the 1066 tractor also applies to the Model 100 Hydrostatic.

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Page

13-1

13-2

Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-4

Inspection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 13-7

Reassembly ........................................ 13-7

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 13-12

Adjusting IP'I'O pressure. • • • . • • . . • • • . . • • . . . • • . . • • . • . . • •. 13 -13

BEL T PULLEY (766 and 966 Tractors) • . . • . . . • . . • • • . . • • . • . . . • .• 13-15

Disassembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 13-16

Inspection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 13-17

Reassembly ................... . . . . . . . . . . . . . . . . . . . .. 13-17

SPECI FICATIONS

IPTO pressure - psi 766, 966 an.d 1066 ......................................... . 1466 and 1468 ........................................... .

+ 235 - 5 270 ± 5

Belt pulley output shaft retaining nut torque - ft. lbs. .................. 200-250


13-1


Section 14

HYDRAULIC SYSTEM

CONTENTS


SPECIFICATIONS ••••••• . . . . . . . . . . . . . . . . . . . . ......... . BASIC HYDRAULIC SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . How it Works .•........................ · . . . . . . . . . . ..

The Complete System • • • • • • • • • . • •

Hydraulic Supply and Control Circuit ••

. . ........... .

Power Steering • • • • • • • • • • • • • • • •

Power Hydraulic Brakes • • • • • • • • • . • • • ••••

Drive Selector and Clutch Lubrication Circuit •.•

Clutch Housing and Transmission

· . . . . . . . . . . ..

· . . . . . . . . . . .. Lubrication System •• ••••••••• . . . . . . . . . . . . . . . . . . . . . . Oil Cooler and Differential Lubrication System ••

Servicing Components •••••••••••••. ••••••

Multiple Control Valve (MCV) •••••••••••••

Gear Drive Tractors •••••••••••• · ......... . Hydrostatic Drive Tractors •••••••. . . . . ......... .

Multiple Control Valve Pump(s) ••••••••••••

Thompson - 12 gpm and 4.5 gpm Pumps •••••

Thompson - 9 gpm Pump. • • • • • • • . ••••••

Cessna - 12 gpm and 4.5 gpm Pumps ••..••.

Cessna - 9 gpm Pump ••••••••••

mtch Pump •••.••••••••••••••• · . . . . . . ... Hydraulic Seat. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Control Valve and Hydraulic Cylinder . . . . . . . . . . . . . . . . . . .

Page

14-4

14-9

14-9

14-9

14-10

14-12

14-12

14-12

14-16

14-18

14-24

14-24

14-24

14-26

14-29

14-30

14-34

14-36

14-42

14-45

14-46

14-46


14-1


lOAD AND POSITION CONTROL HITCH AND AUXI LlARY HYDRAULIC SYSTEM

General Description .................................. .

Principles of Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Neutral Circuit

Lifting Circuit ••

Lowering Circuit.

Action Control Valve Operation

Quadrant Handle Positions .•

. . . . . . . . . . . . .

Position Control Linkage ••

Draft Control Linkage. •

Torsion Bar Assembly

Auxiliary Valve Operation.

Cylinder Cushion Valve.

System Relief Valve •••

Checks and Adjustments ••••

Lever Friction Adjustment •••••

Draft Control (OUtside) Lever

Position Control (Inside) Lever

Drop Check Valve Ball Cage Adjustment

. . . . . . .

Position Control (Inside) Lever Operational Checks and Adjustments • • •

Action Control (Run). • •

Draft Control (Outside) Lever and Torsion Bar Adjustment .•••••

Position Control Accuracy Test

Checking Raise and Drop Time ••

14-2

. . . .

Page

14-50

14-50

14-50

14-50

14-50

14-52

14-52

14-52

14-54

14-54

14-55

14-57

14-60

14-60

14-61

14-61

14-61

14-62

14-63

14-64

14-66

14-67

14-69

14-69


Servicing Components . . . " . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Draft and Position Control Cylinder and Valve Unit

Removal .••

Disassembly

Inspection and Repair

Reassembly

Rockshaft ••.• . . . . . . . . . . . . . . . . . . . . . . . . . . . Removal and Disassembly

Reassembly and Installation.

. . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . Torsion Bar •• . . . . . . . . . . . . . . . . . . . . . . . . . . .

Removal and Disassembly

Reassembly and Installation.

Adjusting Torsion Bar Stops

Control Quadrant and Lever Assembly .••••••••..••.••••.••

Auxiliary Valves • • • . • .

Checking and Adjusting Unlatching Pressure

Page

14-70

14-70

14-70

14-75

14-78

14-80

14-81

14-81

14-83

14-85

14-85

14-87

14-89

14-90

14-95

14-100

Double-Acting Check Valve ............................. 14-101

Female Coupler 14-103

14-3


Section 15

TESTING HYDRAULIC SYSTEM

CONTENTS

Page

SPECI FICATIONS . . . • . . • • • • • • • . . • • • • • • • • • • • • • . • • • • • • • 15-2

TROUBLE SHOOTING BASIC HYDRAULIC SYSTEM

Preliminary Checks from the Tractor Seat. • • . • . • • • • • • • . • • • 15-3

Trouble Shooting Chart. • • . • • • • • • . • • . • . . • . . . . • . • • . • .. "15-5

Testing the Multiple Control Valve (l\iCV). • . . . . . . . . • . • • . . .. 15-13

Checking and Adjusting IPTO Pressure . . • • • • . • . . • • • . • • . .. 15-17

TROUBLE SHOOTING HITCH HYDRAULIC SYSTEM. • • . . • . . . . . . •. 15-19

Checking Efficiency of Hydraulic Pump . • • • • • • • . . . • • • • • • •• 15-20

Trouble Shooting Chart. • • • • . • • . • . . . . . . • • • . . • • • • . . . .. 15-23

Determining the Cause for "Hiccups" ...•••••..•..•.•••.• 15-27

AUXI LlARY VALVES

Checking and Adjusting Unlatching Pressure. . . . . . . • . . • . . . .• 15-28

15-1


Procedure for Checking Auxiliary Valve Unlatching Pressure For 1466 and 1468 Tractors (late production)

NOTE· Run a minimum of three (3) checks with the Flo-Rater. · 1. Flo-Rater attached at pump flange. 2. Engine at rated speed. 3. Valve the bolt torque at 20-25 lbs. 4. Position control lever out of run range on hitch quadrant. 5. Turn the Flo-Rater handle to restrict the flow.

Valve unlatches. I I J I Valve won't unlatch.

If unlatching pressure is between 1900/2250 psi for both, raise and lower positions. The valve is ok.

If unlatching pressure is not If gage pressure is less than

between 1900/2250 psi for both, raise and lower positions. 2250 psi replace relief valve

Readjust detent and recheck. and recheck. If pressure is equal to or greater than 2250 psi proceed.

If valve unlatches between 1900/2250 psi for both, raise and lower positions, the valve is ok.

If vaive unlatches between· If valve doesn't 1900/2250 psi for both, unlatch, remove raise and lower positions, handles and re- the valve is ok. -check.

If unlatching pressure is not between 1900/2250 psi for I both, raise and lower positions. If valve unlatches between Remove handle and recheck. 1900/2250 psi the valve is

If valve doesn't ok. Replace handles and insure linkage if free from

unlatch re-adjust binding. detent and recheck.

Ifvalve unlatches between If valve cannot be

If valve unlatches between 1900/2250 psi for both, adjusted to unlatch

1900/2250 psi the valve is raise and lower positions. between 1900/2250 psi ok. Replace handles and The valve is ok, check repair or replace valve.

insure linkage if free from control linkage. binding.


anual 1066, Gear Drive &966 tic Drive 1 of 2 · &966 tic drive 1 of 2 .ii::"i~i\il.c~ inc. without...

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Transcript of anual 1066, Gear Drive &966 tic Drive 1 of 2 · &966 tic drive 1 of 2 .ii::"i~i\il.c~ inc. without...