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TM 10-3930-669-20
2-14. ELECTRICAL SYSTEM TROUBLESHOOTING (CONT).
6. HOUR METER DOES NOT OPERATE.
INITIAL SETUP
Tools and Special Tools
Tool Kit, General Mechanic's: Automotive
(Item 1, Appendix B)
Multimeter (Item 2, Appendix B)
STE/ICE-R (Optional) (Item 14, Appendix B)
References
TM 10-3930-669-10
Equipment Condition
Engine OFF (TM 10-3930-669-10)
MAIN POWER switch OFF (TM 10-3930-669-10)
Parking brake applied (TM 10-3930-669-10)
Wheels chocked (TM 1 0-3930-669-10)
KNOWN INFO
All 24 vdc circuits operate.
POSSIBLE PROBLEMS
Wire 5 faulty.
Hour meter ground wire faulty.
Hour meter faulty.
Wire 64 faulty.
Alternator faulty.
TEST OPTIONS
Voltage test
STE/ICE-R #89.
REASON FOR QUESTION
This question eliminates a
possible problem or group of
possible problems determining
where troubleshooting
continues.
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2-154
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