44633 Series Compressor PumpNote: This Pump is obsolete. Please contact your local DV Systems

Distributor for Parts and/or a newer replacement Pump.

Warning: Check for proper oil level before using this equipment.

Use PR20 20 weight non-detergent oil for ambient temperatures between 40 and 90F.

Use PR30 30 weight non-detergent oil for ambient temperatures above 90F.

Specifications: Crankcase Capacity (Approx): 30 Fluid Oz (.75 litres)

Minimum RPM: 300

Maximum RPM: 1000

Max. Continuous Working Press.: 150 psi

Phone: (705) 728-5657 Website: www.dvsystems.ca

Fax: (800) 561-1663 Email: sales@dvsystems.ca

Service Bulletin SB 44633

June 12

Page 1 of 5

If you require assistance, contact your local DV Systems Distributor or Authorized Service Centre. If you wish to

contact DV Systems directly or need to locate your closest Distributor, please reach us at :

Service Bulletin SB 44633

June 12

Page 2 of 5

'O' Ring

Proper Oil Level

(to bottom thread of Oil Port)

Oil Filler

Plug

Section Through CrankCase

at Oil Fill Port

Item: Item:

1 6

1

22

43

2

23

2

1

1

1

3

24

2

1

4

25

1

2

5

26

1

2

6

27

1

2

9

30

1

48

29

1

27

28

1

2

10

31

1

2

11

32

4

1

1

6

1

1

1

1

1

2

4

1

1

1

1

1

2

2

1

2

2

2

1

2

1

12

33

13

34

14

35

15

36

44

16

37

17

18

38

39

19

40

20

41

21

42

Part Number Part Number

Part Number

SS-29

VK-633

3/8-16 x 2 HHCS

Valve Kit

# 14 and 25

# 3, 20, 22 (NLA)

# 18, 20, 24, 35, 42, and CPR End Plate Gasket (NLA)

33382-112

37132-120

45875-026

Intake Valve Plug (NLA)

Cylinder Head (NLA)

Gasket Kit

Overhaul Kit

44185-027

38547-108

OK-633

Intake Valve Assembly (NLA)

Head Gasket

356-9406

KK-9848

Intake Filter Assembly

Ring Kit (Std.)

356-9701

45855-131

Filter Element (for 356-9406)

Piston & Pin Assembly (Std.)

SS-2037

SS-3673

1/4 Wing Nut (NLA)

1/4 Shakeproof Lockwasher

31438-124

SS-5

Flywheel

Screw

End Plate (NLA)

1/4-20 x 1/2 HHCS

32233-122

SS-3674

Flywheel Washer

5/16 Shakeproof Lockwasher

End Plate Gasket (NLA)

Inspection Plate (NLA)

SS-3607-CD

21741-193

3/8 Medium Lockwasher (NLA)

Screw

Oil Seal

Inspection Plate Gasket

SS-25-CD

45856-170

3/8-16 x 1 HHCS (NLA)

Rod & Cap Assembly

Washer

Ball Bearing

5/16-18 x 3/4 HHCS

SS-912

37136-111

10-24 X 3/8 RHMS (NLA)

Cylinder & Crankcase

Oil Throw Ring Retainer

1/4 Oil Drain Plug (NLA)

Oil Filler Plug

3/16 x 1 Key number 13

O Ring

Oil Cup

Exhaust Valve Cap (NLA)

Crankshaft/Oil Cup Assembly

Gasket

Oil Throw Ring

Exhaust Valve Retainer (NLA)

End Plate Gasket

Exhaust Valve Assembly (NLA)

End Plate

33465-120

SS-1

38251-122

36883-105

130-111

38513-125

330-160

130-23

SS-12

220-6

SS-1228

NCB-303-1

SS-1578

SS-2670

225-43

33351-115

45817-526

SS-2525

32541-115

33654-113

38281-110

44185-026

37331-106

Qty Qty

Qty

Description Description

Description Includes

The Item Numbers in the Chart(s) below refer to the Pump Breakdown on Page 2.

Kits Available for the 44633 Pump:

Lubrication:

Service Bulletin SB 44633

June 12

Page 3 of 5

Fill the Crankcase to the lowest thread at the Oil Fill

Port Opening. Do not under or overfill. See

drawing.

Tightly screw in Oil Fill Plug using a crescent

wrench.Use only DV Systems Premium

Compressor Oil for the Air Compressor, as it has

been specially formulated for your Unit, and contains

only two additives, a rust inhibitor and an anti foaming

agent.

Old Style CPR Assembly.

Please note that items marked NLA are no

longer available.

New Style CPR Assembly.

This CPR can be retro-fitted onto an

existing 44633 Series Pump. Order:

(1) CPR-9700 Kit

(4) SS-7840 HHCS

(1) 37335-106 CPR Housing

(1) 38281-110 Gasket

Note: This Kit can only be used on Pumps

that operate at 500 rpm or more.

Centrifugal Pressure Release Assembly

Item:

Item:

1 1

22

2 1

3 4

4

41

5 1

6 1

9 1

8 1

7

1

10 1

11 1

1

1

1

1

1

1

1

1

1

1

1

12

13

14

15

16

17

18

19

20

21

Part Number

Part Number

38281-110 End Plate Gasket

37335-105 Press. Release Housing (NLA)

SS-7840 5/16-18 x 1-1/4 HHCS

SS-9 1/4-20 x 5/8 HHCS

330-153-1 Seal Cap (No Longer Required)

330-430-3 CPR Valve Assembly

SS-3672 Lock Washer 3/16

Return Spring

SS-902 8-32 x 1/4 RHMS

Cam

445-189 Cover Plate

Screw (NLA)

445-137 End Plate (NLA)

5/16-18 x 2-3/4 HHCS

330-185 Valve Lever

Med. Lock Washer 5/16

Snap Ring

Ball Cam Assy (NLA)

Ball Cage (NLA)

5/16 Dia. Hard Steel Ball

Ball Cup Assy (NLA)

End Plate Gasket

330-188

330-183

330-184

SS-6914

SS-1503

330-182

330-419-1

330-139-1

SS-1555

330-433

445-144

Qty

Qty

Description

Description

Press. Release Housing

(37335-106)

Flyweights

Valve/Cup BodyBall

Valve

Spring

End Plug

Valve Stem

Service Bulletin SB 44633

June 12

Page 4 of 5

Compressor Torque Values Honing Specifications

44633 Pump Specifications

Item: In Lbs Ft Lbs Nm

1

2

3

7

10

10

28

19

16

240

180

144

72

360

144

144

125

90

228

72

144

20

15

12

6

30

12

12

10.5

7.5

19

6

12

27.1

20.3

16.2

8.1

40.6

16.2

16.2

14.2

10.1

25.7

8.1

16.2

30

33

44

Low Pressure Cylinder 2.5000 .0035

.00552.5005

Head Bolts

Valve Plug

CPR Housing (See Page 4)

CPR End Plate (See Page 4)

Flywheel Bolt

Ball Cam Assy (See Page 4)

Oil Retainer Ring

Valve Cap

Connecting Rod - Crank End

Inspection Cover

Large End Plate

Connecting Rod - Pin End

Std. Cylinder

Hone Diameter

Description Piston Skirt/

Cyl Dia Clear.

Diametral Clearance of oversized Cylinders and Pistons is the same

as standard Cylinders and Pistons.

Cylinders must be within diametral tolerance at all points, out of round

or taper must not exceed .0005.

Hone 20 min to 35 max micro inches of surface roughness.

De-burr the sharp corners at the top of the Cylinder opening with a

1/64 to 1/32 x 30 chamfer.

1.

2.

3

4.

Service Bulletin SB 44633

June 12

Page 5 of 5

PumpModel

Dely(CFM)

Dely(CFM)

# ofCyl.

Bore

Flywheel Pump Dimensions (Refer to drawing)

Stroke Dia. Groove A B C D E F

Weight(Pounds)(Approx)

HP

150 psi

44633

Note: Though the dimensions are correct, the Pump may not be exactly as shown.

2 2.25 12 9 14.125 15.625 13 6.5 6.5 701A1

1

350 4502.4 2.53.7

630 7104.44 5.6

2 930 10006.32 7.7

RPM RPM

100 psi

B

E (Mtg Holes) F (Mtg Holes)

D (Pump less CPR)

C (Pump c/w CPR)

A

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