ELECTRICAL SYSTEM - continued - TM-9-2320-391-100093

TM 9-2320-391-10

M1078A1 SERIES THEORY OF OPERATION -

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Continued

ELECTRICAL SYSTEM - Continued

Alternator, Battery, and Starting Systems (Vehicle S/N 18,550 to 199,999) -

Continued.

5. A remote start system allows the operator to start and stop the engine while the cab

is tilted. The OFF IGN and OFF ST switches are located under the cab on the right

side of the vehicle, next to the alternator. Placing the OFF IGN switch in the on

position supplies battery power to the 12 VDC and 24 VDC ignition relays.

Momentarily holding the OFF ST switch in the on position starts the vehicle.

6. Three switches are provided to allow the operator to disconnect the batteries from

the system. The Battery Disconnect switch, located in the cab on the lower left side of

the instrument panel, disconnects the batteries from the electrical system and shuts

down the engine. The Manual Battery Disconnect Switch (MBDS) is located under the

battery disconnect enclosure near the air tanks, and allows the operator to physically

disconnect the batteries from the system. The remote OFF BATT switch is located

under the cab on the right side of the vehicle next to the remote start switches.

Placing the OFF BATT switch in the off position disconnects the batteries after a one-

second delay. To prevent alternator load dump (voltage spike), the MBDS and OFF

BATT switches should not be used to disconnect the batteries while the engine is

running.

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