Material Hook Mode on JLG Towable Booms

Receiving the message “Running at cut back in material hook mode” on a JLG Towable Boom model indicates that the machine does not recognize the presence of the upper control box.

When this happens, the unit assumes that the basket has been replaced with a material hook. If the upper control box is present on the machine and this message still appears, contact the JLG service department for assistance.

This short video explains how to properly detach the platform and upper control box and install the material hook for T350/T500 model booms.