TM 9-2330-371-14&P
ORGANIZATIONAL TROUBLESHOOTING - CONTINUED
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Step 7.
Check for worn/worn
out brake lining.
If brake lining
is worn, adjust brakes (para. 4-30).
If brake lining
i s w o r n o u t , r e p l a c e brake shoes (para. 4-40).
If brake lining
is not worn, go to step 8.
S t e p 8.
Check for air leakage in air chamber (para. 4-30).
If air chamber is leaking, tighten connections.
If air chamber is not defective, go to step 9.
Visually check for broken or frozen camshaft roller.
S t e p 9.
If camshaft roller is broken or frozen, replace (para. 4-40).
3.
S L O W BRAKE APPLICATION OR RELEASE.
S t e p 1.
Check for low air pressure indication on air pressure gage in towing
Check air lines/connectors for restrictions.
vehicle.
T i g h t e n connections; remove any restrictions from hoses and
repair or replace as necessary.
S t e p 2.
Check operation of emergency relay valve (para. 4-30).
If emergency relay valve is defective, replace valve (para. 4-38).
If emergency relay valve is not defective, go to step 3.
S t e p 3.
C h e c k for weak or broken brake shoe tension spring.
If spring is weak or broken, replace (para. 4-40).
If spring is not defective, go to step 4.
S t e p 4.
Check for defective air chamber.
If air chamber is defective, replace air chamber (para. 4-37).
If air chamber is not defective, go to step 5.
Visually check for broken or frozen camshaft roller.
S t e p 5.
If camshaft roller is broken or frozen, replace (para. 4-40).
4.
GRABBING
BRAKES.
Step 1.
O p e n drain cocks for drainage of moisture from air
reservoirs.
I f no moisture is present, go to step 2.
Step 2.
Check brake adjustment (para. 4-30).
If brakes are out of adjustment, adjust brakes (para. 4-30).
I f brakes are not out of adjustment, go to step 3.
Change 1
4-20.4