TM 9-2320-272-24-4
5-11. ENGINE OIL PUMP REPAIR
THIS TASK COVERS:
c. Repair
a. D i s a s s e m b l y
d. Assembly
b. Cleaning and Inspection
INITIAL SETUP:
REFERENCES (TM)
APPLICABLE MODELS
TM 9-2320-272-24P
M939/A1
EQUIPMENT CONDITION
TOOLS
l Engine oil filter removed (para. 3-5).
General mechanic's tool kit (Appendix E, Item 1)
l Engine front gearcase cover removed (para. 4-18).
Telescoping gauge (Appendix E, Item 136)
l Engine accessory drive removed (para. 4-26).
Snap gauge (Appendix E, Item 123)
l Engine oil pump removed (para. 4-21).
Boring tool (Appendix E, Item 18)
Torque wrench (Appendix E, Item 144)
GENERAL SAFETY INSTRUCTIONS
Soft-faced hammer
l Keep tire extinguisher nearby when using
Arbor press
drycleaning solvent.
MATERIALS/PARTS
l Drycleaning solvent is flammable and toxic. Do
not use near an open flame.
Bypass seat (Appendix D, Item 29)
l When cleaning with compressed air, wear
Bypass spring (Appendix D, Item 30)
Bypass disc (Appendix D, Item 28)
eyeshields and ensure source pressure does not
exceed 30 psi (207 kPa).
Lockplate (Appendix D, Item 339)
Gasket (Appendix D, Item 176)
Two dowel pins (Appendix D, Item 96)
Two screw-assembled lockwashers
Two gaskets (Appendix D, Item 174)
Seven lockwashers (Appendix D, Item 354)
Spring (Appendix D, Item 668)
Three lockwashers (Appendix D, Item 364)
Lubricating oil (Appendix C, Item 50)
Antiseize tape (Appendix C, Item 72)
Drycleaning solvent (Appendix C, Item 71)
a. Disassembly
1.
Remove
adapter (7), elbow (8), and nipple (6) from oil pump body flange (1).
2.
Remove
elbow (9) and nipple (10) from oil pump body flange (1).
3.
Remove
pipe plugs (11) and (12) from oil pump body flange (1).
4.
Remove
pipe plug (5) from inner body (2).
5.
Remove
pipe plug (3) from filter head (4).
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