The kit includes a piston pump mounted on the drawbar (connected to the tractor via the PTO shaft), a hydraulic oil tank with a set of filters, and a set of hoses. The piston pump is mounted on the drawbar when the machine is equipped with a rotary lower hitch. In the case of an upper hitch, the pump is mounted directly on the tractor's PTO shaft. This option is not necessary when the trailer is powered by the tractor's own pump.