Bed leveling system for dump truck

A bed leveling system for a dump truck having a dump bed pivotally affixed to a chassis through a hinge pin, the system comprising:

• a hydraulic main lift cylinder having one end affixed to the chassis and another end affixed to a front end of the dump bed to raise and lower the front end of the dump bed, the bed leveling system including a cylindrical tube rotatably mounted with respect to the chassis along a longitudinal axis of the dump bed, the cylindrical tube being affixed to the hinge pin such that rotation of the cylindrical tube rotates the hinge pin and the rear of the dump bed laterally in a side to side tilting motion about the longitudinal axis of the dump bed, and a tilt sensor to sense the orientation of the dump bed with respect to horizontal and to activate the leveling system to move the hinge pin and the dump bed to a generally level orientation whenever the dump bed is sensed by the tilt sensor to be at least a predetermined angular deviation from level.