Refered to the data sheets of the manufacturers prepared apparatuses for adjusting the handbrake. The adjustation apparatuses will get fixed on the handbrake crank and parallel on the adjust-screw nut of the handbrake-wire and get regulate to the required Power. By operating the adjustation apparatuses once, the assembly parts will get set and the wire will get prestreched in position for the first time. So the adjust-screw nut can get bolt until the wired are light prestressed. After the first prestreching and setting of the assembly parts, the main stretching part to the preset torque can begin.