TM 5-3805-248-23-1
BRAKE SYSTEM TROUBLESHOOTING PROCEDURES - CONTINUED
0014 00
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
2.
Service Brakes Do Not
a. Run engine and allow air pressure to
reach normal operating range (TM
Release - Continued.
5-3805-248-10).
b. Shut down engine (TM 5-3805-248-
10).
c. Release parking brakes (TM 5-
3805-248-10).
1. If both front brakes only or both rear
d. While watching for actuator
movement, apply and release
brakes only will not release, go to Test 4.
service brakes (TM 5-3805-248-
2. If one or more brakes will not release,
10).
go to Test 3.
3.
Inspect brakes for broken or damaged
1. Replace or repair brake components as
parts.
necessary (WP 0147 00 through WP
2. Adjust actuators travel to 2.5 in. (63.5
cm) (WP 0151 00).
3. Go to Test 6.
4.
Check air brake relay valve(s).
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. Apply and release brakes.
d. Air should blast out quickly from air
1. If air escapes slowly or does not exhaust
from air brake relay valve(s) at all,
replace air brake relay valve(s) (WP
2. If problem still exists in both rear brakes
only, go to Test 5.
3. If problem still exists in both front
brakes only, go to Test 6.
0014 00-6
