JLG BOOM LIFTS 520AJ: Function Check

From the ground control console with no load in the platform:

• Ensure that all machine functions are disabled when the emergency Stop Button is pushed in.

• Ensure all functions stop when the function switch is released.

• Operate all functions and check all limiting and cut-out switches to ensure proper operation.

• Check auxiliary power and ensure proper operation.

From the platform control console:

• Ensure the control console is firmly secured in the proper location.

• Check all guards protecting the switches or locks are in place.

• Ensure all machine functions are disabled when the Emergency Stop Button is pushed in.

• Ensure all machine functions stop when the footswitch is released.

• Operate all functions and check all limiting and cut-out switches to ensure proper operation.

With the platform in the stowed position:

• Drive the machine on a grade, not to exceed the rated gradability, and stop to ensure the brakes hold.

• Check that the tilt indicator is illuminated to ensure proper operation.

Place the machine in Transport Mode. Ensure machine is positioned in a smooth, firm surface and drive machine with boom elevated beyond 8 horizontal. Ensure drive speed is reduced while operating.

Activate the Skyguard Sensor:

• Skyguard -approximately 50lb (222Nm) of force to yellow bar.

• Skyguard - Skyline - Press cable to break magnetic connection between the cable and right bracket.

• Skyguard - Skyeye - Put arm or hand in path of sensor beam.

Once the sensor has been activated, verify the following conditions:

• Telescope out function stops and telescope in function operates for a short duration.

• The horn sounds.

• If equipped with a Skyguard beacon, the beacon illuminates.