TM 5-3805-248-23-1
BRAKE SYSTEM TROUBLESHOOTING PROCEDURES - CONTINUED
0014 00
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
14. Differential Lock Does Not
b. Shut down engine (TM 5-3805-248-
10).
Engage - Continued.
c. Loosen air inlet line at differential
and listen for air (WP 0325 00).
d. Apply differential lock pedal.
1. If air pressure is present at differential,
replace differential (WP 0295 00).
2. If air pressure is not present at
differential, replace differential lock
control valve (WP 0173 00).
3. If air pressure is not present at
differential, remove restriction from air
line.
15. Differential Lock Does Not
Release.
WARNING
Eye protection must be worn when performing maintenance where components
or particles could fly out during procedure. Failure to take precautions may
cause injury.
Make sure wheels are chocked and bowl is lowered to ground for all tests. Fail-
ure to do so may cause injury or death.
1.
Check differential lock pedal
1. If differential lock pedal requires
adjustment.
adjustment, perform adjustment
procedure (WP 0171 00).
2. If problem still exists, go to Test 2.
2.
Check for air supply to differential
lock.
If air pressure does not build, go to
a. Run engine and allow air pressure to
reach normal operating range (TM
Malfunction 7.
5-3805-248-10).
b. Shut down engine (TM 5-3805-248-
10).
NOTE
Do not apply differential lock pedal.
c. Loosen air inlet line at differential
1. If air pressure is present at differential,
and listen for air (WP 0325 00).
replace differential lock control valve
2. If air pressure is not present at
differential, replace differential (WP
0295 00).
