TM9-2330-328-14&P
ORGANIZATIONAL TROUBLESHOOTING- Continued
0010 00
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
BRAKES (Continued)
2. NO BRAKES OR WEAK BRAKES (Continued)
Step 4. Check for relay valve operation by observing action of air brake chambers.
a. If air brake chambers do not operate, replace relay valve (WP 0016 00-18).
b. If action of air brake chambers is not positive, replace relay valve (WP 0016 00-18).
c. If a single air brake chamber does not operate properly, replace brake chamber (WP 0016
3. SLOW BRAKE APPLICATION OR SLOW RELEASE.
Step 1. Check for low air pressure (leakage at connections, air lines or valves) (WP 0016 00-14).
a. If air lines/connections are leaking, repair or replace as needed.
b. If valve is leaking, replace defective valve.
c. If air lines/connections and valves are not leaking, proceed to step 2.
Step 2. Remove and check for restrictions in air lines and hoses (WP 0016 00-14).
a. If air lines or hoses are restricted, replace as required.
b. If air lines or hoses are not restricted, proceed to step 3.
Step 3. Check for damaged or broken brake shoe springs (WP 0016 00-5).
a. If a spring is defective, replace spring.
b. If any spring is not defective, proceed to step 4.
Step 4. Check for air brake chamber operation.
a. If one air brake chamber operates slowly, replace defective brake chamber (WP 0016 00-12).
b. If all air brake chambers operate slowly, replace relay valve (WP 0016 00-18).
c. If all air brake chambers still operate slowly, replace trailer valve (WP 0016 00-19).
