ELBOW 2666871 - Caterpillar

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Battery disconnect switch for the tractor
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Battery disconnect switch for the scraper
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Do not turn off the battery disconnect switch until the indicator lamp has turned off. If the switch is turned off when the indicator lamp is illuminated the Diesel Exhaust Fluid (DEF) system will not purge the DEF. If the DEF does not purge, DEF could freeze and damage the pump and lines.
Never move the battery disconnect switch to the OFF position while the engine is operating. Serious damage to the electrical system could result.
Battery Disconnect Switch - The battery disconnect switch can be used in order to disconnect the battery from the machines electrical system. The key must be inserted into the battery disconnect switch before the battery disconnect switch can be turned.
Disconnect Switch ON - To activate the electrical system, insert the key for the battery disconnect switch and turn the key clockwise. The battery disconnect switch must be turned to the ON position before you start the engine.
Disconnect Switch OFF - To deactivate the electrical system, turn the key for the battery disconnect switch counterclockwise to the OFF position.The battery disconnect switch and the engine start switch perform different functions. To disable the entire electrical system, turn off the battery disconnect switch. When you only turn off the engine start switch, the battery remains connected to the electrical system.Turn the battery disconnect switch to the OFF position and remove the key when you service the electrical system or any other machine components and when the machine will not be used for an extended period of a month or more. Turning off the battery disconnect switch will prevent the battery from being discharged.
Never move the battery disconnect switch to the OFF position while the engine is operating. Serious damage to the electrical system could result.