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 TM 9-2320-366-20-2
WARNING
Remove rings, bracelets, watches, necklaces,
and any other jewelry before working around
vehicle. Jewelry can catch on equipment and
cause injury or short across electrical circuits
and cause severe burns or electrical shock.
VOLTAGE TEST
(1) Replace 100 AMP voltage regulator (para
7-5) or 200 AMP voltage regulator (para
20-46) with a known good voltage
regulator.
(2) Start engine (TM 9-2320-366-10-1).
(3) Raise cab (TM 9-2320-366-10-1).
(4) Lift dust boot from alternator 12 VDC
terminal stud.
(5) Set multimeter to volts DC.
(6) Connect positive (+) probe of multimeter
to alternator 12 VDC terminal stud.
(7) Connect negative (-) probe of multimeter to
ground and note reading on multimeter.
(8) If 13.25 -14.75V is not present, replace
100 AMP alternator (para 7-2) or 200 AMP
alternator (para 20-45).
(9) If 13.25-14.75V is present, replace 100
AMP voltage regulator (para 7-5) or 200
AMP voltage regulator (para 20-46).
(10) Position dust boot on alternator 12 VDC
terminal stud.
(11) Lift dust boot from alternator 24 VDC
terminal stud.
(12) Connect positive (+) probe of multimeter to
alternator 24 VDC terminal stud.
(13) Connect negative (-) probe of multimeter to
ground and note reading on multimeter.
(14) If 27.25 -28.75V is not present, replace 100
AMP alternator (para 7-2) or 200 AMP
alternator (para 20-45).
(15) If 27.25-28.75V is present, replace 100 AMP
voltage regulator (para 7-5) or 200 AMP
voltage regulator (para 20-46).
(16) Position dust boot on alternator 24 VDC
terminal stud.
(17) Lower cab (TM 9-2320-366-10-1).
(18) Shut down engine (TM 9-2320-366-10-1).
Change 1
2-1056.9
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