TM 9-2320-272-24-2
3-461. REAR HUBS REPAIR
THIS TASK COVERS:
c. Repair
a. Removal
d. Installation
b. Cleaning and Inspection
INITIAL SETUP:
REFERENCES (TM)
APPLICABLE MODELS
TM 9-2320-272-10
M939A2
TM 9-2320-272-24P
SPECIAL TOOLS
EQUIPMENT CONDITION
Bearing punch (Appendix E, Item 12)
l Front wheels chocked (TM 9-2320-272-10).
Air seal installer (Appendix E, Item 5)
l Spring brake caged (TM 9-2320-272-10).
TOOLS
l Rear wheel(s) removed (TM 9-2320-272-10).
General mechanic's tool kit (Appendix E, Item 1)
GENERAL SAFETY INSTRUCTIONS
Torque wrench (Appendix E, Item 145)
When cleaning with compressed air, wear
l
MATERIALS/PARTS
eyeshields and ensure source pressure does not
Seal (Appendix D, Item 629)
exceed 30 psi (207 kPa).
Seal (Appendix D, Item 630)
Drycleaning solvent is flammable and toxic. Do
l
not use near an open flame.
Hub seal (Appendix D, Item 497)
Ten lockwashers (Appendix D, Item 350)
Keep fire extinguisher nearby when using
l
GAA grease (Appendix C, Item 28)
drycleaning solvent.
Sealant (Appendix C, Item 30)
Abrasive cloth (Appendix C, Item 20)
Drycleaning solvent (Appendix C, Item 71)
a. Removal
1.
Remove brake drum (10) from hub (6).
2.
Remove ten screws (9), lockwashers (8), and axle shaft (7) from hub (6). Discard lockwashers (8).
NOTE
Tag inner and outer bearings for installation.
3.
Remove outer bearing nut (1) and washer (2) from spindle (5).
4.
Remove bearing adjusting nut (3) and outer bearing (4) from spindle (5).
CAUTION
Do not allow hub assembly to slide directly over threaded end of
spindle. Damage to air seals may result.
NOTE
Assistant will help with step 5.
5.
Remove hub (6) from spindle (5).
6.
Remove hub seal (13) and inner bearing (14) from hub (6). Discard hub seal (13).
7.
Remove snapring (11) and two air seals (12) from hub (6). Discard air seals (12).
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