Abstract: A jacking assembly for positioning portable structures, mobile homes or the like includes at least two vertically operating jacks arranged as a pair on an elongated roller bed, which may be arranged in a parallel fashion with a second pair of jacks on a second roller bed. A horizontal operating jack associates one vertically operating jack with the roller bed to provide movement thereto. An adjustable link interconnects the one vertically operating jack on the roller bed so that the movement imposed upon the one vertically operating jack of the pair by the horizontal jack is translated to the other vertically operating jack. A hydraulic control system is provided to selectively actuate individual jacks from a position remote of the roller beds. A method is disclosed to use with the assembly to remove rack and warp from portable structures during positioning.

Abstract: A jacking assembly for positioning portable structures, mobile homes or the like includes at least two vertically operating jacks arranged as a pair on an elongated roller bed, which may be arranged in a parallel fashion with a second pair of jacks on a second roller bed. A horizontal operating jack associates one vertically operating jack with the roller bed to provide movement thereto. An adjustable link interconnects the one vertically operating jack on the roller bed so that the movement imposed upon the one vertically operating jack of the pair by the horizontal jack is translated to the other vertically operating jack. A hydraulic control system is provided to selectively actuate individual jacks from a position remote of the roller beds.