CHASSIS AR 2370234 - Caterpillar

Illustration 1 g03824075The battery disconnect switch is on the left side of the machine behind access door (1) in front of battery compartment (2).
Illustration 2 g03824117
Disconnect Switch On - Insert key (4), and turn the key clockwise in order to activate the electrical system. The switch must be ON before you start the engine.Wait to Disconnect Lamp (3) - This lamp is illuminated anytime that the engine start switch is in the ON position. This lamp is also illuminated when the DEF pump is purging fluid from the system.
Illustration 3 g03824216A popup message also appears in the primary display that states the DEF Purge is active when the engine start key is turned OFF.
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.
Illustration 4 g03422337Observe condition of Wait to Disconnect lamp (3) that is located in the service hour meter. Turn off battery disconnect switch (4) to the OFF position only after the Wait to Disconnect lamp is no longer illuminated.
Disconnect Switch Off - Turn key (4) 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 the engine start switch to the OFF position.Remove the key when you exit the machine overnight or when you exit the machine for an extended period. Also, remove the key when you service the electrical system.
Never move the battery disconnect switch to the OFF position while the engine is operating. Serious damage to the electrical system could result.
Checking the Battery Disconnect System
To ensure 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 system.
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, contact your Cat dealer.