TROUBLESHOOTING PROCEDURES - CONTINUED
Table 1. Troubleshooting Procedures - Continued.
TEST OR INSPECTION
DIFFERENTIAL LOCK CONTROL
Differential Lock Control Will Not
1. If air pressure indication is
Engage When Pedal is Pressed.
an indication of 125 psi (862
okay, go to test step 2. If air
pressure indicator is not okay,
notify Unit Maintenance to
Park machine on level ground, stop engine, and lower bowl to prevent injury to operator and/or
severe damage to machine.
2. Check for mud or other debris
2. Clean mud or debris from
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:
during test step f, notify Unit
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
b. Lift empty bowl.
c. Apply parking brake.
d. With engine at low idle
speed, use steering wheel to
turn machine to left and
right while slowly moving
e. With tractor and scraper in
a straight position, push and
hold differential lock pedal