TM-9-2320-260-20
TRUCK, 5-TON, 6X6, M809 SERIES (DIESEL)
TECHNICAL MANUAL; UNIT MAINTENANCE
APRIL 1995
TM-9-2320-260-20 - Page 701 of 1337
TM 9-2320-260-20
9-5. REAR HUB AND DRUM MAINTENANCE
THIS TASK COVERS:
a. Removal
c. Lubrication
b. Cleaning and Inspection
d. Installation
APPLICABLE MODELS
All
MATERIALS/PARTS
Ten wheel studs
Inner bearing seal
Cork gasket
Twenty lockwashers
Wiper
Safety wire (Appendix C, Item 34)
GAA grease (Appendix C, Item 16)
Drycleaning solvent (Appendix C, Item 29)
Rags (Appendix C, Item 22)
PERSONNEL REQUIRED
Two
REFERENCES (TM)
LO 9-2320-260-12
TM 9-2320-260-10
TM 9-2320-260-20P
EQUIPMENT CONDITION
Parking brake set (TM 9-2320-260-10).
Raise and support rear axles (para. 9-2).
Wheels removed (para. 9-3).
Rear axle shaft removed (para. 7-12).
GENERAL SAFETY INSTRUCTIONS
Keep fire extinguisher nearby when using
drycleaning solvent.
a. Removal
1.
2.
3.
4.
5.
6.
7.
8.
9.
Remove outer adjusting nut (1), adjusting nut washer (2), and inner adjusting nut (3) from
spindle (6).
Remove outer grease seal (4) from hub (8).
NOTE
Service brakeshoes may need adjusting before service brakedrum
can be removed (para. 8-9).
Pull hub (8) and drum (9) out approximately 1 in. (25.4 mm). Push hub (8) and drum (9) back and
remove outer bearing (5) and cork gasket (7) from spindle keyway (10). Discard cork gasket (7).
CAUTION
Do not slide hub and drum assembly over threaded end of spindles.
Damage to spindles may result.
Remove hub (8) and drum (9) from spindle (6).
Remove wiper (13), inner bearing grease seal (12), and inner bearing (11) from spindle (6). Discard
grease seal (12) and wiper (13).
Remove ten nuts (15), lockwashers (16), and inspection cover (17) from drum (9). Discard
lockwashers (16).
Remove ten bolts (20) and deflector (19) from drum (9).
Remove safety wire (21) from ten screws (22). Discard safety wire (21).
NOTE
Assistant will help with step 9.
Remove ten screws (22), lockwashers (23), adapter (18), and hub (8) from drum (9). Discard
lockwashers (23).
9-16
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