BEARING 1906523 - Caterpillar

backup alarm alerts the personnel behind the machine that the machine is backing up. The backup alarm is located at the rear of the machine.
Park the machine on a level surface and stop the engine.
Make sure that the area behind the machine is clear of personnel and clear of obstacles.
Turn the engine start switch to the ON position. Note: Do not start the engine.
Turn the fan speed switch to the OFF position and turn off the entertainment radio (if equipped). Open a door or a window.
Apply the service brakes.
Move the transmission control to the R position and listen for the backup alarm. The backup alarm should sound immediately. The backup alarm should continue to sound until the transmission control is moved out of the R position.
Move the transmission control to the P position and release the service brake.
If the backup alarm did not function, or if the backup alarm did not function properly, contact your Caterpillar dealer.