TM 5-3805-248-10
TROUBLESHOOTING PROCEDURES - CONTINUED
0012 00
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
DIFFERENTIAL LOCK CONTROL - CONTINUED
1.
Turn machine SLIGHTLY while
If problem still exists, go to test step 2.
2.
Differential Lock Control
decreasing engine RPM as an aid in
Will Not Disengage When
unlocking differential lock control.
Pedal Is Released.
2.
Perform differential lock operation
If problem still exists, or if resistance was
observed during test step e, notify Unit
check as follows:
Maintenance.
a. Start engine and allow air pressure to
reach 110 psi (758 kPa).
b. Lift empty bowl.
c. Release parking brake.
d. With tractor and scraper in a straight
position, slowly move machine while
tapping differential lock pedal.
e. Machine should not resist turning
when differential lock is released.
f. Release differential lock pedal.
ELECTRICAL SYSTEM
1.
Ensure STOP LIGHT or SER DRIVE
Select STOP LIGHT or SER DRIVE. If
1.
Backup Alarm Will Not
problem still exists, go to test step 2.
function has been selected on military
Sound When Machine Is
light switch.
Placed in Reverse.
2.
Check for blown fuse #8 at fuse panel
If fuse is blown, request a replacement fuse
from Unit Maintenance. If fuse is okay, go
to test step 3.
Connect electrical connector, if required.
3.
Check electrical connection at alarm,
If problem still exists, notify Unit Mainten-
located at rear of scraper under rear
ance.
panel.
Reconnect connector, if required. If
Check blackout drive light for separated
2.
Blackout Drive Light Will
connector is okay, notify Unit
connection or damage.
Not Operate When B.O.
Maintenance.
DRIVE Function Is
Selected.