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 TM 9-2330-331-14&P
0012 00
Table 2. Organizational Troubleshooting - Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. BRAKES WILL NOT
Replace return spring
3. Check for weak or broken brakeshoe
RELEASE - Continued
return spring.
4. Check for proper service brake adjustment. Adjust service brakes
2. BRAKES DO NOT
Tighten any loose fittings or
1. Perform air leakage test (WP 0044 00-1).
ENGAGE OR ARE WEAK
repair or replace fittings per
component (WP 0044 00-1).
Replace defective
2. Check for proper operation of
spring and relay valves
spring and relay valves.
1. Replace brakeshoes
3. Check for presence of grease on
brakeshoe linings.
oil seals (WP 0037 00-1).
2. Clean brakedrum.
Replace brakeshoes if linings
4. Check for worn brakeshoe linings.
are worn within 1/18 in.
(1.6 mm) of rivet heads
Adjust service brakes
5. Check for proper service brake
adjustment.
3. BRAKES ENGAGE OR
Remove restriction or replace
1. Check for restrictions in air lines and
RELEASE SLOWLY
defective air lines and hoses
hoses.
Replace defective
2. Check for proper operation of
spring and relay valves
spring and relay valves.
Replace return spring
3. Check for weak or broken brakeshoe
return spring.
Replace defective airbrake
4. Check for proper operation of airbrake
chamber (WP 0042 00-1).
chamber.
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