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TM 9-2320-360-20-1
BLOWER FAN MOTOR TEST
(1)
Remove eight screws and cover from
upper case.
(2)
Remove electrical tape from spade
connectors of fan motor wire harness.
(3)
Turn engine switch to ON position.
(4)
Operate ventilator on high (H), medium
(M), and low (L) (TM 9-2320-360-10).
(5)
Place positive (+) probe of multimeter
on orange spade connector.
(6)
Place negative (-) probe of multimeter
on black spade connector and look for
22-28 volts on multimeter.
(7)
Turn engine switch to OFF position.
(1)
Turn engine switch to ON position.
(2)
Operate ventilator (TM 9-2320-360-10) and
check the operation of the faulty blower fan
motors.
(3)
Turn engine switch to OFF position.
CAB WIRE HARNESS
VOLTAGE TEST
(1)
Remove cab rear wire harness
connector from ventilator wire
harness connector.
(2)
Turn ENGINE switch to ON
position.
(3)
Place positive (+) probe of
multimeter on position C of cab
rear wire harness MC91 con-
nector.
(4)
Place negative (-) probe of
multimeter on known good
ground and look for 22-28
volts.
Change 1 628.5
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