Table 2-2. Unit Troubleshooting -continued
TEST OR INSPECTION
AIRBRAKE SYSTEM (Model WPES-1) - continued
Step 6. Remove hub and drum assembly for wheel that drags (refer to paragraph 2-100) and check for rusted or
damaged brake parts or weak return spring.
Notify Direct Support Maintenance if brake parts are damaged, worn or corroded
3. BRAKES DRAG OR REMAIN LOCKED.
Step 1. Check all compressed air system tubes, fittings, and components for leaking air.
a. If compressed air system is not losing pressure, replace relay valve. Refer to paragraph 2-98.
b. If compressed air tube or fitting is leaking air, repair air brake system tubing. Refer to paragraph 2-96.
c. If coupling half is leaking, repair airbrake hose assembly. Refer to paragraph 2-96.
d. If brake line air cleaner is leaking air, replace brake line air cleaner Refer to paragraph 2-97.
e. If reservoir is leaking air, replace reservoir. Refer to paragraph 2-96.
f. If reservoir drain cock is leaking air, replace reservoir drain cock. Refer to paragraph 2-96.
g. If air chamber assembly is leaking air, replace air chamber assembly. Refer to paragraph 2-2-102.
h. If airbrake relay valve is leaking air, replace airbrake relay valve. Refer to paragraph 2-98.