TM 5-3805-296-10
0010
Table 1. Operator Troubleshooting - Continued.
0010
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
N OT E
26. Differential Lock Con-
trol Will Not Disengage
Machine must be on hard, solid surface.
When Switch Is
Released.
Differential Lock Control Disen-
1. Turn machine SLIGHTLY while
gaged -
decreasing engine RPM as an aid
in unlocking differential lock
Differential lock control functions.
control.
Troubleshooting complete.
Differential Lock Control Fails To
Disengage -
Proceed to step 2.
2. Perform differential lock operation
Machine Does Not Resist Turning -
check as follows:
Differential lock control functions.
a. Start engine and allow air
Troubleshooting complete.
pressure to reach 110 psi (758
Problem Still Exists. Machine
kPa).
Resists Turning -
b. Lift empty bowl.
Notify Field Maintenance.
c.
Release parking brake.
d. With tractor and scraper in a
straight position, slowly move
machine with differential lock
switch released.
e. Machine should not resist
turning when differential lock
switches are released.
27. Hydraulic System Fail-
1. Check hydraulic system
Components Damaged -
ure Indicator Illuminated
components for damage.
Notify Field Maintenance.
No Damage Found -
Proceed to step 2.
2. Check hydraulic system
Leaks Found -
components for leaks.
Notify Field Maintenance.
No Leaks Found -
Proceed to step 3.
3. Check hydraulic oil level
Hydraulic Oil Level Is Correct -
Notify Field Maintenance.
Hydraulic Oil Level Is Low -
Proceed to step 4.
4. Check if Hydraulic System Failure
Hydraulic System Failure Indicator
Indicator is illuminated.
Illuminated -
Notify Field Maintenance.