TM 9-2330-203-14&P
4-37.
HUB, WHEEL BEARING, AND BRAKEDRUM MAINTENANCE (Con't).
NOTE
If inner and outer bearing cups require replacement, bearings and cups are replaced as
a set.
4.
If damaged, pull bearing cups (18 and 20) out of hub (19) using bearing puller
5.
If damaged, remove wiper ring (23) from axle spindle using bearing puller or drift.
c.
CLEANING AND INSPECTION
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 to personnel.
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 1000F-138F (380C-590C). 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.
1.
Clean all parts with dry cleaning solvent and dry thoroughly.
2.
Clean and inspect bearings and bearing cups in accordance with TM 9-214.
3.
Visually inspect inside of brakedrum for out-of-round condition or scoring. Replace brakedrum if scored or out-of-
round.
4.
Inspect all parts for cracks, breaks, corrosion, or other damage. Replace all damaged parts.
d.
ASSEMBLY
1.
If removed, install wiper ring (23) on axle spindle using oil seal replacer.
2.
Coat inner surface of hub (19) with a thin layer of grease.
NOTE
If inner and outer bearing cups require replacement, bearings and cups are replaced as
a set.
3.
If removed, press or drive bearing cups (18 and 20) into hub (19) until seated on shoulder in hub.
4.
If removed, position adapter plate (4) against hub (19) and press in ribbed bolts (3).
NOTE
5.
Install brakedrum (5) and deflector (M197 and M198 only) (2) on adapter plate (4) and access cover (8) on
brakedrum using ten bolts (1), new lockwashers (7), and nuts (6).
4-91