BRAKEDRUM REPAIR (Cont).
CLEANING AND INSPECTION
DO NOT handle brake assembly 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 assembly
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 100°F-138°F
(38°C-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.
Use dry cleaning solvent to remove grease and
oil from brakedrum (1). Dry thoroughly.
Inspect stud holes (2) for cracks. Discard
brakedrum (1) if cracks are present.
Inspect braking surface (6) for cracks (3) and
heat checking (4). If damaged, reface braking
surface (see subparagraph b .)
Inspect braking surface (6) for scoring (5) and
bellmouth, Measure depth of scoring or
bellmouth using dial indicator. If depth of
scoring or bellmouth exceeds 0.005 in. (0.127
mm), reface braking surface (see subparagraph