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TM 9-2320-364-20-2
2-1622
50. 12 AND 24 VOLT SYSTEMS NOT CHARGING OR UNDER CHARGING
(145 AMP) (CONT).
Both voltmeters indicate low
charge.
Batteries OK.
Fuel pump operates indicating
24 vdc present at DUVAC
controller IGN terminal.
Alternator belts OK.
DUVAC controller OK.
Wire 1278 OK.
Jumperwire OK.
Alternator OK.
Wire 1344 OK.
Wire 1274 OK.
Brown wire OK.
Wire 1435 OK.
Black wire OK.
Red wire between regulator and
DUVAC controller faulty.
Orange wire between regulator
and DUVAC controller faulty.
Regulator faulty.
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
Voltage test.
STE/ICE-R #89.
If 10-14 vdc are not measured on
the red wire, then input voltage
for generating field voltage is not
being supplied to the regulator
and alternator will not charge.
YES
NO
Repair red wire (see
schematic Fig 2-39).
Verify repair, to to
Step 14 of this Fault.
12.
Are 10-14 vdc measured on
red wire at connector MC22?
WARNING
Read WARNING
on Page 2-1623
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