TM 9-2320-260-20
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8-8. SERVICE BRAKESHOE MAINTENANCE (Contd)
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a. Removal
1. Remove return spring (14) from pins (20).
2. Remove two cotter pins (19) from pins (20). Discard cotter pins (19).
3. Remove two locknuts (15), anti-rattle springs (18), and four mounting washers (17) from mounting
pins (23). Discard locknuts (15).
4. Remove two retaining clips (16) and anchor link (13) from anchor pins (12). Discard retaining
clips (16).
5. Pull brakeshoes (10) from wheel cylinder (24) and remove brakeshoes (10) from backing plate (7).
6. Remove two mounting washers (21) and anti-rattle springs (22) from mounting pins (23).
7. Remove two bushings (11) and pins (20) from brakeshoes (10).
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b. Cleaning and Inspection
WARNING
Eye protection is required when using wire brush for cleaning.
q
Failure to do this may result in injury to personnel.
q Drycleaning solvent is flammable and will not be used near open
flame. Use only in well-ventilated places. Failure to do so may
result in injury to personnel.
q Do not use a dry brush or compressed air to clean brakeshoes.
There may be asbestos dust on brakeshoes which can be danger-
ous to your health if you breathe it. (Brakeshoes must be wet;
use soft bristle brush. )
1.
Wash all parts, except brakeshoes (10), in drycleaning solvent and wipe dry with clean rag. Clean
outer brakeshoe side of backing plate (7) with rag saturated in drycleaning solvent and wipe dry.
2.
Measure top, middle, and bottom thickness of brakeshoes (10). Replace if minimum thickness is
21/64 in. (8.33 mm) or less.
3.
Inspect backing plate (7) for cracks, breaks, and elongated holes. Replace front backing plate (7)
if broken, cracked, or holes are elongated.
4.
Inspect anchor pins (12) for cracks, looseness, and chipped and broken retaining clip slots. Replace
anchor pins (12) if cracked, loose in backing plate (7), or retaining clip slots are damaged.
5.
Inspect wheel cylinder (24) for tears, cracks, bends, and leaks. Replace if torn, cracked, bent, or
leaking.
6.
Inspect cams (1), springs (2), and adjusting pins (4) for cracks, bends, and breaks. Replace if cracked,
bent, or broken.
7.
Inspect return spring (14) and anti-rattle springs (18) and (22) for breaks, bends, and distorted coils.
Replace if broken, bent, or coils are distorted.
8.
Visually inspect mounting pins (23), backing plate (7), adjusting pins (4), and springs (2). Perform
steps 9 through 14 if cracked, bent, or broken.
9.
Remove two nuts (5), lockwashers (6), and mounting pins (23) from backing plate (7). Discard
Iockwashers (6).
10.
Remove two nuts (8), lockwashers (9), and anchor pins (12) from backing plate (7). Discard
lockwashers (9).
11.
Remove two adjusting pins (4), washers (3), adjusting cams (1), and springs (2) from backing
plate (7).
8-14
