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TM 9-2320-364-20-2
2-1605
DOOR
SHOWN
REMOVED
FOR CLARITY
ALTERNATOR
POS (+)
TERMINAL
WIRE 1820
WIRE 1278
LOCKWASHER
NUT
FAN
CONTROL
SWITCH
HEADLIGHT
SWITCH
ENGINE
SWITCH
(1) Remove nut, lockwasher and wires
1820 and 1278 from alternator positive
terminal. Discard lockwasher.
(2) Set multimeter select switch to volts
dc.
(3) Connect positive (+) multimeter lead to
the positive (+) terminal of the alternator.
(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 at least 26 vdc are not present,
turn off heater, headlights and
engine and go to Step 4 of this
Fault.
(b) If at least 26 vdc are present, turn
off heater, headlights and engine.
Repair wire 1278 (see schematic
Fig 2-39) or notify DS
Maintenance.
(6) Install wires 1278 and 1820 on
alternator positive (+) terminal with
lockwasher and nut.
VOLTAGE TEST
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.
Alternator is capable of producing over 40 vdc. Be careful when taking a voltage reading not to get shocked.
NOTE
DUVAC controller resets to the 24 vdc
charge mode approximately every 55
seconds. Take the voltage reading for at
least a minute to make sure voltage
reading is taken during the 24 vdc charge
mode.
Tag and mark all wires prior to removal.
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