TM 5-3800-205-10-2
TROUBLESHOOTING PROCEDURES - CONTINUED
0011 00
Table 1. Troubleshooting Procedures - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
DIFFERENTIAL LOCK CONTROL
1. If air pressure indication is
1.
Differential Lock Control Will Not
1. Observe air pressure gage for
okay, go to test step 2. If air
Engage When Pedal is Pressed.
an indication of 125 psi (862
pressure indicator is not okay,
kPa).
notify Unit Maintenance to
perform
Air
System
troubleshooting.
WARNING
Park machine on level ground, stop engine, and lower tank to prevent injury to operator and/or
severe damage to machine.
2. Check for mud or other debris
2. Clean mud or debris from
under pedal.
pedal area. If problem still
exists, go to test step 3.
3. Perform differential lock
3. If problem still exists, or if no
operation check as follows:
was
observed
during test step f, notify Unit
Maintenance.
WARNING
If machine is parked indoors, DO NOT run engine unless exhaust fumes are vented to the outside.
Failure to follow this warning may cause injury or death due to carbon monoxide poisoning.
a. Start engine and allow air
pressure to reach cut-out
pressure of 125 psi (860
kPa)
b. Lift empty tank.
c. Apply parking brake.
d. With engine at low idle
speed, use steering wheel to
turn machine to left and
right while slowly moving
forward.
