BATTERY SYSTEM OPERATION

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. 1-43