GENERATING SYSTEM OPERATION

TM 9-2320-387-24-l f- 1 .- 1 l-22. GENERATING SYSTEM OPERATION 1 I I The 200-ampere generating system maintains battery charge and provides electrical power to operate vehicle circuits. Major components of the generating system are: 0 ^A 0 B 0 C 0 D 0 E 0 F 0 G 0 H 0 I BATTERY GAUGE - Indicates electrical system voltage. It is connected to the electrical system through circuit 567. ALTERNATOR (ZOO-AMPERE1 - Is rated at 28 volts at 200 amperes, and 14 volts at 50 amperes with external regulator. The alternator assists and recharges the vehicle batteries during operation. CIRCUIT 568 - Senses vehicle voltage, and activates the field current in the alternator circuit to alternator. PROTECTIVE CONTROL BOX - Protects the vehicle electric system in the event battery polarity is reversed. Provides load dump, glow plug operation, and interfacing of engine body harnesses. CIRCUIT 2 - Sends AC signal, indicating alternator shaft rpm, to frequency switch in protective control box to prevent operation of starter solenoid when engine is running. BATTERIES - Two 12-volt batteries are connected in a series to provide 24 volts to start vehicle and assist alternator during operation. POSITIVE CABLE 6 - Provides 28-volt alternator output to maintain charge across two batteries. POSITIVE CABLE 68A - Provides 16-volt alternator output to maintain charge across the lower battery. CIRCUIT 3 - Connects to negative stud on alternator with engine ground strap to provide a ground circuit to alternator. l-29