TM 9-2320-272-24-2
3-460. FRONT HUBS REPAIR
THIS TASK COVERS:
c. Repair
a. Removal
d. Installation
b. Cleaning and Inspection
INITIAL SETUP:
APPLICABLE MODELS
REFERENCES (TM)
M939A2
TM 9-214
TM 9-2320-272-10
SPECIAL TOOLS
TM 9-2320-272-24P
Bearing punch (Appendix E, Item 12)
EQUIPMENT CONDITION
Air seal installer (Appendix E, Item 5)
Rear wheels chocked (TM 9-2320-272-10).
q
TOOLS
Front wheel removed (TM 9-2320-272-10).
q
General mechanic's tool kit (Appendix E, Item 1)
Front wheel valve removed (para. 3-456).
q
Torque wrench (Appendix E, Item 144)
GENERAL SAFETY INSTRUCTIONS
MATERIALS/PARTS
When cleaning with compressed air, wear
q
Oil seal (Appendix D, Item 629)
eyeshields and ensure source pressure does not
Seal (Appendix D, Item 630)
exceed 30 psi (207 kPa).
Oil seal (Appendix D, Item 497)
q Drycleaning solvent is flammable and toxic. Do
Ferrule (Appendix D, Item 118)
not use near an open flame.
Gasket (Appendix D, Item 246)
q Keep fire extinguisher nearby when using
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)
Remove brake drum (9) from hub (2).
1.
Remove ten screws (10) and washers (11) from drive flange (7).
2.
Install two screws (10) on threaded holes (8) of drive flange (7). Tighten screws (2) until drive
3.
flange (7) separates from hub (2).
Remove drive flange (7) from hub (2) and remove two screws (10) from drive flange (7).
4.
NOTE
Tag inner and outer bearing for installation.
Remove outer bearing nut (6) and washer (5) from spindle (1).
5.
Remove nut (4) and outer bearing (3) from spindle (1).
6.
NOTE
Assistant will help with step 7.
Remove hub (2) from spindle (1).
7.
Remove snapring (14) and two air seals (13) from hub (2). Discard air seals (13).
8.
Remove screw (15), ferrule (20), tee (12), and gasket (19) from hub (2). Discard ferrule (20) and
9.
gasket (19).
Remove hub seal (18) and inner bearing (17) from rear of hub (2). Discard hub seal (18).
10.
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