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TM 9-2320-364-20-2
2-1642
53. 24 VOLT SYSTEM OVER CHARGING (145 AMP) (VOLTMETER READS
OVER 28 VDC).
INITIAL SETUP
1.
Go to Step 2 of this
Fault.
START
YES
NO
24 vdc voltmeter indicates high
charge.
12 vdc voltmeter indicates proper
charge indicating voltage
regulator OK.
Batteries OK.
Fuel pump operates indicating
24 vdc present at DUVAC
controller IGN terminal.
24 vdc voltmeter faulty.
DUVAC controller out of
adjustment.
DUVAC controller faulty.
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
Voltage test.
STE/ICE-R #89.
If 26-28 vdc are measured at
wire 1702, voltmeter is faulty.
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)
Are 26-28 vdc measured
at wire 1702 at 24 vdc
voltmeter?
Replace 24 vdc
voltmeter (Para
7-22). Verify repair,
go to Step 3 of this
Fault.
WARNING
Read WARNING
on Page 2-1643
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