TM 9-2320-260-34-1
10-4. WHEEL HUB SPINDLE MAINTENANCE
THIS TASK COVERS:
c. Installation
a. Removal
b. Inspection
INITIAL SETUP
MATERIALS/PARTS
APPLICABLE MODELS
Ten lockwashers (Appendix D, Item 243)
All
Inner gasket (Appendix D, Item 146)
SPECIAL TOOLS
Outer gasket (Appendix D, Item 147)
Spindle bearing remover (Appendix B, Item 39)
Sealing compound (Appendix C, Item 43)
GAA grease (Appendix C, Item 14)
TOOLS
REFERENCES (TM)
General mechanic's tool kit
LO 9-2320-260-12
(Appendix B, Item 1)
Inside caliper micrometer (Appendix B, Item 9)
TM 9-2320-260-20
Arbor press (Appendix B, Item 7)
TM 9-2320-260-34P-1
EQUIPMENT CONDITION
Hub and drum assembly removed (as required)
(TM 9-2320-260-20).
a. Removal
NOTE
Have drainage container ready to catch brake fluid.
1.
Remove screw (10), gasket (9), hydraulic fitting (8), gasket (7), and brake line (11) from wheel
cylinder (4). Hydraulic fitting (8) remains connected to brake line (11). Discard gaskets (7) and (9).
2. Remove spring (1) from brakeshoes (2).
3. Remove ten nuts (17) and lockwashers (16) from studs (13). Discard lockwashers (16).
4.
Remove deflector (15) and plate assembly (3) from steering knuckle (12).
Drain lubricant from differential as required (LO 9-2320-260-12).
5.
6. Remove spindle (5) from steering knuckle (12) and axle (14).
7. Remove spindle bearing (6) from spindle (5).
8. Remove sealing compound remains from face of spindle (5) and steering knuckle (12).
b.
Inspection
1. Inspect spindle (5) for bends, cracks, nicks, or burrs on sealing surfaces and damaged threads.
Repair minor thread damage with tine mill file. Replace spindle (5) if threads are stripped, crossed,
or broken.
2. Inspect spindle bearing (6) for nicks, cracks, and scoring. Replace spindle bearing (6) if nicked,
cracked, or scored.
3. Measure inside diameter of spindle bearing (6). Replace if measurement is over 2.251 in.
(57. 18 mm).
NOTE
Perform steps 4 through 6 only if spindle bearing is being replaced.
4. Using arbor press, remove spindle bearing(6) from spindle (5).
5. Measure bearing bore of spindle (5). Replace if bearing bore diameter is over 2.376 in. (60.35 mm)
or there is evidence of scoring or damage to bearing bore.
