TM 9-2320-280-20-1
1-21. STARTING SYSTEM OPERATION
The starting system is identical for all vehicles covered in this manual, and consists of the following
components and circuits.
ROTARY SWITCH - When in "START” position, provides battery power to the starter solenoid and
to the neutral start switch through circuit 14.
NEUTRAL STARTER SWITCH - When transmission shift lever is in "N" (neutral) position, this
switch closes a relay in the protective control box through circuit 14 allowing battery power to reach
the starter solenoid.
PROTECTIVE CONTROL BOX - Locks out the starter circuit, which prevents starter from
reengaging while engine is running.
STARTER SOLENOID - A magnetic relay that transmits 24-volt battery power to the starter
motor.
STARTER MOTOR - Cranks the engine for starting, and is supplied 24-volt battery power through
circuit 6A.
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