4-37. BRAKESHOE MAINTENANCE (Cont).
CLEANING AND INSPECTION
l DO NOT handle brakeshoes, brakedrums, or other brake components unless area
has been properly cleaned. There maybe asbestos dust on these cornponents which
can be dangerous if you touch It or breathe it. Wear an approved fliter mask and
gloves. Never use compressed air or a dry brush to clean brake components. Dust
maybe 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 cleanlng 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
excesslve heat The solvents flash point is 100°F-138°F (38°C-59°C). If you
become dizzy while using cleaning solvent immediately get fresh air end medical
help. If solvent contacts eyes,imediately wash your eyes and get medical aid.
Clean all parts with dry cleaning advent. Dry thoroughly.
Inspect all parts for damage. Replace any damaged parts.
Inspect brakeshoe surfaces for cracks, distortion, and excessive wear. Brakeshoe linings must measure at
least 1/8 In. (3.18 mm). Replace brakeshoes if cracked or if lining thlckness is less than 1/8 In. (3.18 mm).
Perform steps 1 and 2 only if wheel cyilnder or backing plate assembly were.
Bottom two holes of backing plate will be used for handbrake cable bracket.
Install axle spindle (21) and backing plate (15) to axle (20) with ten new stafwasher (19) and nuts (18).
Install wheel cylinder (para 4-38).
Install two anchor pins (9) with two new Iockwashers (8) and nuts (7) on backing plate (15).
Install washer (10) and cupped washer (11) over each anchor pin (9).
Install large threaded pin (5), retaining washer (3), spring (2), and cupped washer (1) to each brakeshoe (4).
Install each brakeshoe (4) to anchor pins(9) and wheel cylinder and Install two new Iockwashers (16) and nuts
install two small threaded pins (14) and install two new Iockwashers (16) and nuts (17) on backing plate (15).
Install two washers(13) and slotted washers (12).
Install return spring (6).
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