TM 9-2320-366-34-4
Section II. MAINTENANCE PROCEDURES
26-2. M1089 THREE STAGE HYDRAULIC PUMP REPAIR
This task covers:
a. Disassembly
b. Cleaning/Inspection
c. Assembly
INITIAL SETUP
Tools and Special Tools
Tool Kit, Genl Mech (Item 78, Appendix B)
Wrench, Torque, 0-600 lb ft (Item 97,
Appendix B)
Press, Arbor, Hand Operated (Item 48, Appendix B)
Puller, Mechanical (Item 52, Appendix B)
Goggles, Industrial (Item 28, Appendix B)
Wrench Set, Socket (Item 84, Appendix B)
Pliers, Retaining Ring (Item 44, Appendix B)
Gloves, Rubber (Item 26, Appendix B)
Wrench, Torque, 0-200 lb-in. (Item 93, Appendix B)
Tools and Special Tools (Cont)
Wrench Set, Socket (Item 87, Appendix B)
Materials/Parts
Seal (36) (Item 369, Appendix F)
Seal, Plain (6) (Item 383, Appendix F)
Plug, Machine Thread (Item 342, Appendix F)
Rag, Wiping (Item 60, Appendix C)
Lubricating Oil, Engine (Item 46, Appendix C)
Solvent, Dry Cleaning (Item 83, Appendix C)
Adhesive (Item 4, Appendix C)
a. Disassembly.
CAUTION
When removing sections of pump, use care
not to damage machined surfaces. Failure to
comply may result in damage to equipment.
Gears are matched as sets.
Keep sets
together during disassembly.
Failure to
comply may result in damage to equipment.
Pump sections must be installed in the same
way they are removed. Match mark all
sections to insure correct assembly. Failure
to comply may result in damage to
equipment.
(1) Position pump in vise.
(2) Match mark port end cover (1) to third stage gear
housing (2).
(3) Remove four nuts (3), washers (4) and port end cover
(1) from third stage gear housing (2).
26-2
