621G Wheel Tractor-Scraper Caterpillar


Engine Overspeed Test Switch

Usage:

621G ALP


Illustration 1g00870743

Engine Overspeed Test Switch (1) - Switch (1) is located on the lower right side of the front dash. The switch is used to test the alarms of an engine overspeed condition. Push the top of the switch in order to test the system. When the system is working properly, the engine overspeed indicator that is located on the upper left side of the dash will illuminate. Also, the overspeed alarm will sound at the same time. Release the switch in order to stop the test.

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