Abstract: A vehicle rerailing device for use in difficult climates and the full range of temperature conditions present in such climates comprising rerailing elements connectable to and acting on a derailed and possibly overturned vehicle and hydraulic means which can be operated over said full range of temperature conditions to operate the rerailing elements. Said hydraulic means comprises a hydraulic lift device which includes a plurality of pressure displacement cylinders, each with a displaceable piston in it, a pressure chamber at one side of the piston and a second chamber at the other side of the piston. A high pressure generating unit is connected with the pressure chamber. A vacuum generator is connected with the pressure chamber. A control valve determines whether the pressure chamber is pressurized or is at reduced pressure to shift the piston, respectively, to lift the load or to return unloaded.