ALTERNATOR A 3Y0654 - Caterpillar

protection override switch is used in circumstances when it is absolutely necessary to continue to operate the engine. The switch can be used in order to prevent an engine shutdown during critical maneuvers. The protection override switch is a two-position ON/OFF switch. The switch is located inside the engine instrument panel.If an engine is operating and an alarm occurs, the operator may move the switch from the normal to the override position. In the override position, the engine will not shut off, regardless of alarms. If an engine has shut off because of an event code, the engine may be started again by moving the switch to the override position. However, the engine protection devices will be defeated.