TM 5-3805-248-23-1
BRAKE SYSTEM TROUBLESHOOTING PROCEDURES - CONTINUED
0014 00
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
13. Apron Does Not Operate
b. Shut down engine (TM 5-3805-248-
10).
Correctly When Bowl
c. Loosen air inlet line at bowl control
Control Lever Is Pushed
valve and listen for air (WP 0237
Forward - Continued.
d. Push bowl control lever forward.
If air pressure is present at bowl control
valve, replace bowl control valve (WP
2.
Check apron 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).
1. If air pressure is present at apron control
c. Loosen air inlet line at apron control
valve and listen for air (WP 0330
valve, replace apron control valve (WP
00).
0325 00).
2. If air pressure is not present at apron
control valve, remove restriction from
air line.
14. Differential Lock Does Not
Engage.
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 adjustment of differential lock
Adjust if necessary (WP 0171 00).
pedal (WP 0171 00).
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).
