TM 5-3805-248-23-1
BRAKE SYSTEM TROUBLESHOOTING PROCEDURES - CONTINUED
0014 00
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
11. Transmission Hold 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 transmission hold
1. Adjust if needed (WP 0139 00).
valve pedal.
2. If problem still exists, go to Test 2.
2.
Check for air supply to transmission
hold valve inlet.
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).
c. Loosen air inlet line at transmission
and listen for air.
d. Apply transmission hold pedal.
1. Repair transmission if air pressure is
present at inlet (WP 0364 00).
2. If air pressure is not present at inlet, go
to Test 3.
3.
Check transmission hold control valve
assembly.
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 air inlet line at transmission
If air pressure is present at transmission
hold control valve and listen for air.
hold control valve, replace transmission
hold control valve (WP 0174 00).
4.
Check transmission hold pedal
If transmission hold pedal requires
adjustment.
adjustment, perform adjustment procedure
