TM 9-2320-260-34-2
15-17. HOIST PUMP MAINTENANCE
THIS TASK COVERS:
a. Removal
d. Assembly
e. Installation
b. Disassembly
c. Cleaning and Inspection
INITIAL SETUP
REFERENCES (TM)
APPLICABLE MODELS
LO 9-2320-260-12
M817
TM 9-214
TOOLS
TM 9-2320-260-10
General mechanic's tool kit
TM 9-2320-260-20
(Appendix B, Item 1)
TM 9-2320-260-34 P-2
Arbor press (Appendix B, Item 7)
EQUIPMENT CONDITION
Mechanical puller kit (Appendix B, Item 14)
Power takeoff-to-hydraulic pump propeller shaft
MATERIALS/PARTS
removed (TM 9-2320-260-20).
Gasket (Appendix D, Item 62)
Hydraulic reservoir drained (LO 9-2320-260-12).
Six lockwashers (Appendix D, Item 223)
Oil seal (Appendix D, Item 480)
Woodruff key (Appendix D, Item 551)
Woodruff key (Appendix D, Item 552)
a. Removal
Remove six screws (1), lockwashers (2), pump (5), and gasket (4) from control valve adapter (3). Discard
gasket (4) and lockwashers (2).
b. Disassembly
NOTE
Tag front and rear wear plates for installation.
1. Remove woodruff key (20) from shaft (15). Discard woodruff key (20).
2. Remove eight screws (21), washers (20), front cover (19), and front wear plate (16) from pump
body (11) and rear cover (6).
3. Using puller, remove two bearings (17) and oil seal (18) from front cover (19). Discard oil seal (18).
CAUTION
Care must be taken when removing shafts and gears to prevent
damage to gear teeth.
4. Remove shafts (15) and (23) with gears (13) from pump body (11) and rear cover (6).
5. Using arbor press, remove gears (13) and woodruff key (14) from shafts (15) and (23). Discard
woodruff key (14).
6. Remove pump body (11) and rear wear plate (9) from rear cover (6).
7. Using puller, remove two bearings (8) and plug (7) from rear cover (6).
NOTE
Perform step 8 if dowel pins require replacement.
8. Using puller, remove two dowel pins (10) and (12) from pump body (11). Discard dowel pins (10)
and (12).
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