TM 5-3800-205-23-1
TROUBLESHOOTING PROCEDURES - CONTINUED
0007 00
Table 4. Differential Lock Control Troubleshooting Procedures.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
If air pressure gage indication is
1. Differential Lock Control Will Not Engage
1. Check air pressure gage for an
okay, go to test step 2.
When Pedal is Pressed.
indication of 125 psi (862
kPa).
2. Perform Air Leakage Checks
Repair any leaks found during
Air Leakage Checks. If problem
still exists, go to test step 3.
If problem still exists after
3. Check adjustment of air
adjustment of governor, go to
compressor governor (WP
test step 4.
4. Perform Differential Lock
If check indicates a discrepancy,
go to test step 5.
5. Check
differential
lock
a. Adjust differential lock
control valve adjustment.
control valve (WP 0080 00).
b. If problem still exists, go to
test step 6.
6. Check
differential
lock
a. Replace differential lock
control valve for damage.
control valve if worn or
damaged (WP 0081 00).
b. If problem still exists, notify
DS Maintenance.
If problem still exists, go to
2. Differential Lock Control Will Not Disengage
1. Turn machine slightly, while
test step 2.
When Pedal is Released.
decreasing engine RPM as an
aid in unlocking differential
lock control.
2. Perform Differential Lock
If check indicates a discrepancy,
go to test step 3.
3. Check
differential
lock
a. Adjust differential lock
control valve adjustment.
control valve (WP 0081 00).
b. If problem still exists, go to
test step 4.
a. Replace differential lock
4. Check
differential
lock
control valve if worn or
control valve for wear or
damaged (WP 0081 00).
damage.
b. If problem still exists, notify
DS Maintenance.
