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TM 9-2320-364-20-2
2-1628
51. 12 VOLT SYSTEM OVER OR UNDER CHARGING (145 AMP).
INITIAL SETUP
1.
Adjust voltage
regulator (Para 7-7).
Verify repair, go to
Step 2 of this Fault.
START
YES
NO
12 vdc voltmeter indicates over
or under charging.
24 vdc voltmeter indicates
proper charge.
Batteries OK.
12 vdc voltmeter OK.
Voltage regulator out of
adjustment.
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
Voltage test.
STE/ICE-R #89.
If the voltage regulator is out of
adjustment, the 12 volt batteries
will not charge properly.
2-20. ELECTRICAL SYSTEM TROUBLESHOOTING (CONT.)
Tools and Special Tools
Tool Kit, General Mechanic’s: Automotive
(Item 74, Appendix G)
STE/ICE-R (optional) (Item 3, Appendix G)
Multimeter (2) (Item 44, Appendix G)
Equipment Condition
Engine OFF, (TM 9-2320-364-10)
Parking brake applied, (TM 9-2320-364-10)
Wheels chocked, (TM 9-2320-364-10)
References
TM 9-2320-364-10
TM 9-4910-571-12&P
Materials/Parts
Lockwasher (4) (Item 171, Appendix F)
Is voltage regulator
adjusted properly?
Fault not corrected,
notify Supervisor.
WARNING
Read WARNING
on Page 2-1629
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