TM-9-2320-260-20
TRUCK, 5-TON, 6X6, M809 SERIES (DIESEL)
TECHNICAL MANUAL; UNIT MAINTENANCE
APRIL 1995
TM-9-2320-260-20 - Page 70 of 1337
TM
9-2320-260-20
1-20. ELECTRICAL SYSTEMS OPERATION (Contd)
b. Starting System Operation.
A
B
C
D
E
F
G
H
BATTERIES
- Four 6TN batteries supply 24 volts to starting system.
PROTECTIVE CONTROL BOX
- Prevents starter motor from engaging when engine is
running.
OIL PRESSURE LOCKOUT SWITCH
- Provides an electrical signal to protective control box,
which prevents starter from engaging.
FUEL SHUTOFF SOLENOID
- Controls fuel flow into fuel pump.
BATTERY SWITCH
- Activates all electrical circuits.
IGNITION SWITCH
- When engaged, provides battery power to starter solenoid.
STARTER MOTOR
- Converts electrical energy to mechanical power as it engages the flywheel
to crank engine.
STARTER SOLENOID
- Actuates starter motor gear to crank engine.
1-57
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