TM-9-2320-387-10
TRUCK, UTILITY: S250 SHELTER CARRIER, 4X4, M1113
OPERATOR’S MANUAL
OCTOBER 2001
CHANGE 1
TM-9-2320-387-10 - Page 36 of 277
TM
9-2320-387-10
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BATTERY SYSTEM OPERATION
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The battery system consists of the following circuits and components:
CIRCUIT 6A-
Connects batteries (through buss bar) to starter and
protective control box through circuit 74k
BATTERY POSITIVE CABLE - Connects battery positive to buss bar.
BA’ITERIES
- Two 6TN batteries are
connected
in
a series to provide 24 volts
DC for the electrical starting system and to assist alternator during operation.
SLAVE RECEPTACLE
- Links an external power source directly to slaved
vehicle’s batteries to assist in cranking engine when vehicle’s batteries are
not sufficiently charged.
SHUNT - Used when measuring current draw from batteries utilizing
STEZICE-R.
PROTECTIVE
CONTROL BOX - Protects vehicle electrical system in the
event battery polarity is reversed. Provides frequency lockout, load dump,
glow plug operation, and interfacing of engine and body harnesses.
ROTARY SWITCH - When in START position, actuates starter solenoid
through circuits 1lA and 74A When in RUN position, closes circuit 29A to
activate instrument cluster gauges through circuit 27.
CIRCUIT 7A - Connects starter negative circuit terminal to engine ground
while 7E connects shunt to engine ground.
STARTER SOLENOID -Actuates
starter motor gear to crank vehicle
engine.
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