GEAR-CRANKSHAFT 3522001 - Caterpillar

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Light Switch - Push the switch in order to turn on the work lights. Whenever you push the switch, you change the pattern of the work lights that are turned on. The indicator lights in the cab indicate the pattern of the work lights.Pattern 1 - When you press the light switch once, indicator light (1) turns on. When indicator light (1) is on, the following work lights are turned on: work light (A), which is mounted on the chassis, and work lights (C), which are mounted on the cab.Pattern 2 - When you press the light switch twice, indicator light (1) and indicator light (2) turn on. When indicator light (1) and indicator light (2) are on, the following work lights are turned on: work light (A), which is mounted on the chassis,, work lights (C), which are mounted on the cab, and work lights (B), which are mounted on the boom and the stick.OFF - When both of the indicator lights are off, all of the work lights are off.Note: Your machine may be equipped with a lighting system that has a time delay. When this system is installed, cab lights (C) will not turn off for a predetermined amount of time after the engine start key has been turned to the OFF position. The time delay can vary from 0 seconds to 90 seconds. For further details, consult your Caterpillar dealer.