TM 9-2320-280-20-1
1-24. BATTERY SYSTEM OPERATION
The battery system is identical for all vehicles covered in this manual and consists of the following circuits
and components.
CIRCUIT 6A- Connects the batteries to the starter and to the protective control box through
circuit 74A.
BATTERIES - Two 6TN batteries are connected to provide 24 volts D.C. for the electrical starting
system.
SLAVE RECEPTACLE - Links an external power source directly to the slaved vehicle’s batteries to
assist in cranking the engine when the vehicle’s batteries are not sufficiently charged.
SHUNT - Used when measuring current draw from batteries utilizing STE/ICE-R.
PROTECTIVE CONTROL BOX - Protects the vehicle electrical system in the event the battery
system polarity is reversed.
ROTARY SWITCH - When in "START" position actuates starter solenoid through circuit 11A and
74A. When in "RUN" position closes circuit 29A to activate instrument cluster gages through circuit 27.
CIRCUIT 7A- Connects the battery system to the starter negative terminal and chassis ground.
STARTER SOLENOID - Actuates starter motor gear to crank vehicle engine.
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