TM 9-2330-213-14&P
4-33. SERVICE BRAKE ASSEMBLY MAINTENANCE (M103A1, M105A1, AND M107A1) (Con't).
b.
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 approvod 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.
Dry cleaning solvent P-D-680 is toxic and flammable. Always wear protective
goggles and gloves, and use only in a weil-ventilated area. Avoid contact with skin,
eyes, and clothes, and DO NOT breathe vapors. DO NOT use near open frame 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.
Clean all parts with dry cleaning solvent. Dry thoroughly.
1.
2.
inspect all parts for damage. Replace any damaged parts.
3.
Inspect brakeshoe surfaces for cracks, distortion, and excessive wear. Brakeshoe linings should have a
minimum thickness of 1/8 in. (3.2 mm). Replace brakeshoes if cracked or if lining thickness is less than 1/8
in. (3.2 mm).
c.
ASSEMBLY
NOTE
If replacing brakeshoes (10 and 23) only, perform steps 5 through 12.
Position backing plate (3) on axle (1) and install 12 screws (26), new Iockwashers (30), and nuts (31).
1.
2.
Insert two anchor pins (27) in backing plate (3) and install two new Iockwashers (28) and nuts (29).
Position four springs (4) and flatwashers (5) on guide pins (2).
3.
4*
Position two flatwashers (25) and flatwashers (24) on anchor pins (27).
Position two shoulder bolts (6 and 9) and brakeshoes (10 and 23) on backing plate (3).
5.
Install four flatwashers (22) and Iockpins (21) on guide pins (2).
6.
7.
Install two flatwashers (20) and slotted washers (19) on anchor pins (27).
8.
Install return spring (8) on brakeshoes (10 and 23).
9.
Position strut (7) on brakeshoe (23) and install flatwasher (18), nut (17), and new cotter pin (16).
10.
Position brake lever (11 ) on brakeshoe (10), and aline with strut (7). Install flatwasher (12), nut (13), and
new cotter pin (14).
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