TM-9-2320-361-24-1
2-1/2 TON, 6X6, M44A2 SERIES TRUCKS
TECHNICAL MANUAL; FIELD AND SUSTAINMENT MAINTENANCE PART 1 OF 2
AUGUST 2006
TM-9-2320-361-24-1 - Page 86 of 1176
TM 9-2320-361-24-1
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THEORY OF OPERATION (Contd)
CHARGING SYSTEM
Generating System Operation:
The generating system used is 24V direct current (DC), and utilizes a
V-belt driven 60A alternator. The major components of the generating system are as follows:
ALTERNATOR
– Supplies electrical power to operate all electrical accessories and keeps batteries
charged when vehicle engine is operating.
HEATING SYSTEM OPERATION
The following components make up the heating system:
HOT WATER PERSONNEL HEATER
– Warms interior of vehicle cab in cold weather. Hot engine
coolant circulating through heater is utilized to warm air flowing through heater core. An electric
motor, with two speeds, powers a fan to force outside air through heater and into cab.
HEATER SWITCH
– Allows heater fan to be operated at two speeds.
C
B
A
61
2
10
A
B
C
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