The hydraulic pipes and hoses between the mast and the hydraulic power unit are installed on the trailer. The three accumulator bottles and a nitrogen bottle are installed in the middle of the trailer. The accumulator bottles will feed supply to the slips and expanding spools in a situation where the hydraulic power unit is not working. The Nitrogen is used for the refilling of gas to the bladders inside the accumulator bottles. Lugs for the raising/lowering of cylinders are mounted on each side of the trailer.

All of the hydraulic control valves for raising/lowering the mast, extend and retract outriggers, BOP control panel, winch control valves, and jacking control valves are installed on the trailer. A panel containing hydraulic pressure gauges and regulating valves for the various hydraulic loops are installed on the side of the trailer.

Junction boxes, cable loops, control cabinet for winches, main power connecting cabinet and light switches are installed on the side of the trailer. Support wires are installed between the mast and the trailer, one on each side.