TM 9-2320-272-24-2
3-236. POWER STEERING PUMP MAINTENANCE
THIS TASK COVERS:
a. Removal
c. Assembly
b. Disassembly
d. Installation
INITIAL SETUP:
APPLICABLE MODELS
MANUAL REFERENCES (TM)
All
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
Parking brake set (TM 9-2320-272-10).
Springtite assembly (Appendix D, Item 675)
Hood raised and secured (TM 9-2320-272-10).
Woodruff key (Appendix D, Item 727)
Steering pump drivebelts removed (M939/A1)
Three lockwashers (Appendix D, Item 382)
Two lockwashers (Appendix D, Item 354)
GENERAL SAFETY INSTRUCTIONS
Locknut (Appendix D, Item 327)
Do not start engine when power steering hoses are
Cap and plug set (Appendix C, Item 14)
disconnected.
WARNING
Do not start engine when power steering hoses are disconnected.
Pressure may whip hoses, causing injury to personnel.
NOTE
M9391A1 and M939A2 power steering pumps are maintained
basically the same. This procedure is for M939/A1.
a. Removal
Cap or lug all openings immediately after disconnecting
hydraulic lines and hoses to prevent contamination. Failure to do
so may result in steering system damage.
NOTE
Have drainage container ready to catch hydraulic oil.
Tag all hydraulic lines and hoses for installation.
1.
Loosen clamp (4) and remove hose (5) from steering pump return tube (3).
2.
Loosen nut (7) and remove high-pressure hose (6) from steering pump high-pressure fitting (8).
3.
Remove three screws (18), lockwashers (19), and steering pump (2) from mounting bracket (17).
Discard lockwashers (19).
4.
Remove locknut (9), washer (10), screw (13), washer (12), screw (14), washer (15), and adjusting
link (11) from mounting bracket (17) and engine (20). Discard locknut (9).
b. Disassembly
1.
Remove two screws (24), lockwashers (23), washers (22), and mounting bracket (17) from engine
mounting bracket (21). Discard lockwashers (23).
2.
Remove springtite (28), washer (27), pulley (1), and woodruff key (26) from steering pump (2).
Discard woodruff key (26) and springtite (28).
3.
Remove breather (25) from steering pump (2).
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