TM 9-2330-213-14&P
4-48. HUB, WHEEL BEARING, AND BRAKEDRUM MAINTENANCE (M103A1, M105A1, AND
M107A1) (Con't).
WARNING
Dry cleaning solvent P-D-680 is toxic and flammable. Always wear protective goggles
and gloves, and use only in a well-ventilated area. Avoid contact with skin, eyes, and
clothes, and DO NOT breathe vapors. DO NOT use near open flame or excessive
heat. The solvent's flash point is 100F-130F (38C-59C). If you become dizzy
while using cleaning solvent, immediately get fresh air and medical help. If solvent
contacts eyes, immediately wash your eyes and get medical aid.
NOTE
If outer and inner wheel bearing cones (8 and 11) need replacing, bearing cups (14)
must also be replaced (subpara b).
7.
Clean and inspect outer and inner wheel bearing cones (8 and 11) in accordance with TM 9-214. Discard if
damaged.
DISASSEMBLY
b.
WARNING
DO NOT handle brakeshoes, brakedrums, or other brake components unless area
has been properly cleaned, There may be asbestos dust on these components
which can be dangerous if you touch it or breathe it. Wear an approved filter mask
and gloves. Never use compressed air or a dry brush to clean brake components.
Dust may be removed using an industrial-type vacuum cleaner. Clean dust or mud
away from brake components with water and a wet, soft brush or cloth. Failure to
follow this warning may result in serious illness or death.
1.
Remove eight screws (20) and Iockwashers (21). Remove adapter (22) and brakedrum (12) assembly
from hub (13). Discard Iockwashers.
2.
Remove ten nuts (15), flatwashers (16), inspection cover (17), screws (18), adapter (22), and deflector
(19) from brakedrum (12).
NOTE
Perform step 3 only if bearing cups (14) are being replaced, Bearing cups should
always be replaced when outer and inner wheel bearing cones (8 and 11) are
replaced.
Remove two bearing cups (14) from hub (13).
3.
If damaged, remove six wheel bolts (23) from hub (13).
4.
c. ASSEMBLY
1.
If removed, install six wheel bolts (23) in hub (13).
2.
If removed, tap two bearing cups (14) into position in hub (13).
Position deflector (19) and adapter (22) on brakedrum (12) and install ten screws (18), inspection cover
3.
(17), ten flatwashers (16), and nuts (15).
4.
Position adapter (22) and brakedrum (12) assembly on hub (13) and install eight new Iockwashers (21)
and screws (20).
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