Abstract: Method of eliminating the influence of the steering backlash on the measuring or setting of the individual front wheel track on motor vehicles and apparatus for implementation of the method. The steering wheel (1) is set in a periodically rocking motion (P) about a given central position (M) during the measuring or the setting of the track, the amplitude of which motion is at least as great as half the value of the steering backlash. To generate the rocking motion of the steering wheel, a motor (3) which is arranged on the chassis (5) and the output shaft (6) of which is connected to the steering wheel (1) via an eccentric disk (7) and a thrust rod (8) may be used. The amplitude of the motion of the steering wheel (1) is determined by the eccentric disk (7), while the central position (M) can be set by an adjusting device (9) such that the steering wheel spoke (2) is horizontal.

Abstract: A device for measuring axle geometry at the wheel axles of motor vehicles with the wheels turning. The device has at least two frames. A driven pair of rotating cylinders is positioned in each frame. A wheel of the vehicle can rest on the cylinders. The frame can rotate freely in a horizontal plane around a pivot that is positioned away from the pair of cylinders along the length of the vehicle. The frame can also slide freely on the base plate in a direction parallel to the longitudinal axis of the vehicle. A sensing component can be placed against the side of the wheel. The sensing component has a goniometer that measures the position of the sensing component against the wheel and compares it to a reference that is fixed with respect to the device.