TM 5-3805-261-20
Section XXII. LIGHT SYSTEM TROUBLESHOOTING.
7-77.
GENERAL INFORMATION. This section lists the common light system malfunctions which may occur during the
operation of the 130G Grader. You should perform the tests, inspections and corrective actions in the order listed. Follow
the troubleshooting procedures listed below step-by-step until you can go no further.
7-78.
LIGHT SYSTEM TROUBLESHOOTING AND MAINTENANCE PROCEDURES. This section cannot list all
possible malfunctions, nor can it list all possible tests, inspections or corrective actions. If a malfunction is not listed,
contact your supervisor.
LIGHT SYSTEM TROUBLESHOOTING AND MAINTENANCE PROCEDURES.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
a.
ALL DRIVING, TAIL AND PANEL LIGHTS FAIL TO OPERATE.
Step 1. Check circuit breaker number 60A.
Reset circuit breaker.
Step 2. Check the wiring harness for corrosion, cracks or breaks at circuit breaker connection.
If the wiring harness is damaged or defective--repair. Refer to paragraph 7-117. If replacement is necessary--
contact Direct Support.
b.
ALL STOP/TAIL, PANEL AND ARTICULATION LIGHTS FAIL TO OPERATE.
Step 1. Check fuse number 10A.
If fuse is blown--replace. Refer to paragraph 7-63.
Step 2. Test the continuity of the stop light switch (Figure 7-105). Connect multimeter to the back of switch.
Figure 7-105
7-180
