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TROUBLESHOOTING PROCEDURES
ELECTRICAL SYSTEM CONTINUED

Operator Manual For Motorized Road Grader Model 120M
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0011
TM 5-3805-293-10
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
0.
ELECTRICAL SYSTEM CONTINUED
3. CERTAIN GROUND ENGAGING TOOLS INOPERATIVE OTHERS OPERATE PROPERLY.
Step 1.
Check that implement lockout switch is in UNLOCK position (WP 0004).
a.
Push bottom of implement lockout switch.
b.
If problem persists, go to Step 2.
Step 2.
Check for blown fuse(s) at fuse panel.
a.
Replace fuse (WP 0023).
b.
If problem persists, notify Field Level Maintenance.
4. DEFROSTER FAN INOPERATIVE.
Check for blown fuse at fuse panel.
a.
Replace fuse (WP 0023).
b.
If problem persists, notify Field Level Maintenance.
5. DIFFERENTIAL LOCK INOPERATIVE.
Check for blown fuse at fuse panel.
a.
Replace fuse (WP 0023).
b.
If problem persists, notify Field Level Maintenance.
6. DIRECTIONAL TURN SIGNALS INOPERATIVE.
Step 1.
Ensure STOP LIGHT or SER DRIVE function has been selected on military light switch (WP
0004).
a.
Select STOP LIGHT or SER DRIVE.
b.
If problem persists, go to Step 2.
Step 2.
Check electrical connector at lamp assembly.
a.
Reconnect connectors, if required.
b.
If connectors are okay, go to Step 3.
Step 3.
Check for blown fuse at fuse panel.
a.
Replace fuse (WP 0023).
If problem persists, notify Field Level Maintenance.
0011-2


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