Section 4
MAINTENANCE
4-59
785 Motor Grader
TROUBLESHOOTNG CHARTS
ELECTRICAL SYSTEM (Continued)
SYMPTOM CAUSE REMEDY
Front Wiper Will Not Operate at Wiper fuse Replace fuse.
Wiper switch Replace switch.
Wiper motor Replace motor.
Front Washer Will Not Operate Washer fuse Replace fuse.
Wiper switch Replace switch.
Washer pump Replace pump.
Driving Lights Will Not Operate Blown fuse Replace fuse.
Driving light switch 0 volts at light with key on and light
switch on. Replace switch.
Accessory relay Turn key switch to ACC or ON.
Accessory relay inside console
"click". If no click is heard and
24 volts read on wire from switch to
relay, replace relay.
One Front Driving Light Does Bulb Replace bulb.
Not Operate
One Rear (Red) Tail Light Does Bulb Replace bulb.
Not Operate
any Switch Position
Courtesy of Machine.Market
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