TM 9-2320-272-24-3
4-127. POWER STEERING PUMP (M939A2) REPAIR
THIS TASK COVERS:
a. Disassembly
c. Assembly
b. Cleaning and Inspection
INITIAL SETUP:
APPLICABLE MODELS
REFERENCES (TM)
M939A2
LO 9-2320-272-12
TM 9-2320-272-10
TOOLS
TM 9-2320-272-24P
General mechanic's tool kit (Appendix E, Item 1)
EQUIPMENT CONDITION
MATERIALS/PARTS
Power steering pump removed (para. 3-236)
Cover kit (Appendix D, Item 86)
GENERAL SAFETY INSTRUCTIONS
Filter element kit (Appendix D, Item 123)
Flange gasket (Appendix D, Item 210)
When cleaning with compressed air, wear
Power steering parts kit (Appendix D, Item 523)
eyeshields and ensure source pressure will
Pumping element kit (Appendix D. Item 525)
not exceed 30 psi (207 kPa).
Lubricating oil (Appendix C, Item 49)
Drycleaning solvent is flammable and toxic.
Petrolatum (Appendix C, Item 53)
Keep fire extinguisher nearby when using
Drycleaning solvent (Appendix C, Item 71)
drycleaning solvent.
Use eyeshields when removing steering pump
reservoir cover.
Use eyeshields when removing valve cap.
a. Disassembly
1.
Remove screw (7), vent cover (6), and vent filter (5) from cover (4).
WARNING
Power steering pump reservoir cover is spring-compressed. Use
eyeshields when removing. Failure to do so may result in injury to
personnel.
2.
Remove wingnut (1), washer (2), stud gasket (3), cover (4), and cover gasket (8). Discard stud
gasket (3) and cover gasket (8).
3.
Remove spring (9), filter cap (10), and filter (11) from reservoir (23). Discard filter cap (10) and
filter (11).
4.
Remove O-ring (20) and stud (12) from intake fitting (19). Discard O-ring (20).
5.
Remove intake fitting (19) from reservoir plate (18).
6.
Remove two screws (21), lockwashers (22), reservoir plate (18), reservoir (23), two reservoir screw
gaskets (24), and intake gaskets (17) from pump body (16). Discard lockwashers (22) and gaskets (17)
and (24).
7.
Remove elbow (32) and O-ring (33) from pump body (16). Discard O-ring (33).
8.
Remove outlet fitting (30) and O-ring (31) from pump cover (25). Discard O-ring (31).
WARNING
Valve cap is spring-compressed. Use eyeshields when removing.
Failure to do so may result in injury to personnel.
9.
Remove valve cap (29), O-ring (28), spring (27), and valve (26) from pump cover (25). Discard
O-ring (28).
10.
Remove three screws (13), flange (14), and flange gasket (15) from pump body (16). Discard flange
gasket (15).
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