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 85 of 1176
TM 9-2320-361-24-1
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THEORY OF OPERATION (Contd)
STARTING CONTROL SYSTEM
Starting System Operation:
The starter motor on all LD and LDT multifuel engines is energized
electrically, and operates mechanically by engaging the starter gear with the engine flywheel via an
electric solenoid. To crank the engine, a number of switches are activated to send power to the starter
solenoid and starter motor. The major components of the starting system are as follows:
STARTER SOLENOID
– Actuates starter motor gear to crank vehicle engine.
STARTER SWITCH
– Connects 24-volt battery power to starter motor when pressed.
STARTER RELAY
– A magnetic switch, actuated by starter switch that allows 24-volt battery
power to flow to starter motor.
STARTER MOTOR
– Cranks vehicle engine for starting when supplied with 24-volt battery power.
G
F
E
D
7
11
27
74
74
74B
14
6
214
ACCESSORY SWITCH
BATTERIES
F
E
D
G
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