TM9-2330-358-14&P
Table 4-2.
Organizational Troubleshooting Table
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
2.
NO BRAKES OR WEAK BRAKES - continued.
Step 7.
Check for worn/worn out brake lining.
a.
b.
If brake lining is not worn, go to step 8.
c.
Step 8.
Check for air leakage in air chambers.
a.
If air chambers are leaking, tighten connections.
b.
If air chambers are not leaking, go to step 9.
Visually check for broken or frozen camshaft roller.
Step 9.
3.
SLOW BRAKE APPLICATION OR RELEASE.
Step 1.
Check for low air pressure indication on air pressure gage in towing
vehicle. Check air lines/connectors for restrictions.
Repair
a.
Tighten connections; remove any restrictions from hoses.
b.
If air pressure gage indicates normal, go to step 2.
Check operation of emergency relay valve.
Step 2.
a.
b.
If emergency relay valve is not defective, go to step 3.
Step 3.
Check for weak or broken brake shoe tension spring.
a.
b.
If spring is not defective, go to step 4.
Check for defective air chambers.
Step 4.
a.
b.
If air chambers are not defective, go to step 5.
Visually check for broken or frozen camshaft roller.
Step 5.
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