TM 5-3805-248-23-1
BRAKE SYSTEM TROUBLESHOOTING PROCEDURES - CONTINUED
0014 00
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
2.
Service Brakes Do Not
5.
Test double check valve.
Release - Continued.
a. Run engine and allow air pressure to
reach normal operating range (TM
5-3805-248-10).
b. Shut down engine (TM 5-3805-248-
10).
c. Release park and emergency brakes
(TM 5-3805-248-10).
NOTE
Do not apply brakes.
1. If air leaks out from disconnected line,
d. Disconnect brake signal line at
scraper air brake relay valve (WP
replace double check valve (WP 0158
2. If no air leaks out, go to Test 7.
6.
Test brake control valve.
a. Run engine and allow air pressure to
reach normal operating range (TM
5-3805-248-10).
b. Shut down engine (TM 5-3805-248-
10).
c. Loosen or disconnect signal line at
tractor air brake relay valve (WP
NOTE
Do not apply brakes.
1. If air leaks out from either of
d. Loosen or disconnect signal line
from double check valve under
disconnected lines, replace brake
operator compartment (WP 0159
control valve (WP 0155 00).
2. If no air leaks out, replace brake actuator
for brake(s) in question (WP 0151 00)
0014 00-7
