631E Series II Wheel Tractor-Scrapers Caterpillar


Backup Alarm

Usage:

631E 1BB
The backup alarm is located at the rear of the machine.

The alarm sounds when the transmission control lever is in the REVERSE position. The backup alarm is used to alert people behind the machine.



Illustration 1g00100669

A three-position switch is located on the backup alarm. The switch has HIGH, LOW, and MEDIUM positions. The three-position switch regulates the volume of the alarm.

The alarm is set from the factory at the highest sound level. The setting should remain in the HIGH position, unless the job site requires a lower sound level.

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