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TM 9-2320-364-20-2
2-1633
(1) Remove four screws, lockwashers,
washers and DUVAC cover.
(2) Set multimeter select switch to
volts dc.
(3) Connect positive (+) multimeter lead to
terminal A on DUVAC controller.
(4) Connect negative (–) multimeter lead
to known good ground.
(5) Start engine and turn on headlights
and heater (TM 9-2320-364-10).
(a) If voltage reading does not drop
momentarily every 55-60 seconds,
voltage regulator is faulty. Turn off
heater, headlights and engine and
replace voltage regulator (Para
7-6).
(b) If voltage reading does drop
momentarily every 55-60 seconds,
voltage regulator is OK. Turn off
heater, headlights and engine.
Remove all jewelry such as rings, dog tags, bracelets, etc. If jewelry or tools contact positive electrical
circuits, a direct short may result. Damage to equipment, injury or death to personnel may occur.
Terminal 1 and terminal 2 at DUVAC controller are electrically hot all of the time. Ensure DUVAC cover
does not contact either terminal. Damage to equipment, injury or death to personnel may occur.
VOLTAGE TEST
NOTE
DUVAC controller should reset to the 24 vdc
charge mode approximately every 55
seconds. Take the voltage reading for at
least two minutes to allow the regulator
timer to cycle.
Every 55-60 seconds you will see momentary
drop in voltage as regulator resets from 12 to
24 vdc charging mode.
Charging voltage could drop as low as 0 vdc.
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