4-44. HUB, BRAKEDRUM, AND WHEEL BEARINGS MAINTENANCE (Con't).
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 1OOF-138F (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.
Clean all removed components with dry cleaning solvent and dry thoroughly.
Clean and inspect bearings in accordance with TM 9-214.
Visually inspect brakedrum for out-of-round, heat checking, scoring, and cracks. Replace if damaged.
Replace all damaged components
If removed, install six new bolts (18) in hub (8).
Install backing plate (16) on brakedrum (10) with 18 bolts (21), flatwashers (20), and new locknuts (19).
Install hub (8) on brakedrum (10) and backing plate (16) with six bolts (15) and nuts (17).
Pack bearings with grease In accordance with TM 9-214.
Install spacer (13) on axle (14).
Install inner bearing (11) and new seal (12) in hub (8).
Install hub (8) and brakedrum (10) on axle (14).
Install outer bearing (9) on hub (8) and axle (14).