HOUSING ASSEM. 7V9389 - Caterpillar

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Battery Switch - The battery disconnect switch is located on the left side of the machine behind the access door.
Battery Switch ON - Insert the key. Turn the key clockwise to the ON position in order to activate the electrical system. The switch must be ON before you start the engine.
Battery Switch OFF - Turn the key counterclockwise in order to shut off the entire electrical system. The battery disconnect switch and the engine start switch perform different functions. The entire electrical system is disabled when you turn the battery disconnect switch to the OFF position. The battery remains connected to the electrical system when you turn off the engine start switch.Turn the battery disconnect switch to the OFF position and remove the key when you service the electrical system or any other machine components.
Never move the battery disconnect switch to the OFF position while the engine is operating. Serious damage to the electrical system could result.
To ensure that no damage to the engine occurs, verify that the engine is fully operational before cranking the engine. Do not crank an engine that is not fully operational.Perform the following procedure in order to check the battery disconnect switch for proper operation:
With the battery disconnect switch in the ON position, verify that electrical components in the operator compartment are functioning. Verify that the hour meter is displaying information. Verify that the engine will crank.
Turn the battery disconnect switch to the OFF position.
Verify that the following items are not functioning: electrical components in the operator compartment, hour meter and engine cranking. If any of the items continue to function with the battery disconnect switch in the OFF position, consult your Caterpillar dealer.