Corsa C
Geometric driving axis The rear axle decides the tracking axle of the vehicle. Therefore all measurements on the front wheels relate to the geometric driving axis. The vehicle drives "straight ahead" on the geometric driving axis.
If these axes deviate outside the tolerance given by Opel/Vauxhall, the toe of the rear wheels must be adjusted. If the toe cannot be adjusted, the rear axle must be adjusted or aligned using the corresponding special tool. If adjustment/setting as specified is not possible, the rear axle body must be replaced or the fixing points of the rear axle checked for damage on the vehicle subframe. An anti-clockwise deviation of the geometric driving axis ("pulling" to the left) results in a negative and a clockwise deviation ("pulling" to the right) produces a positive angle. During electronic chassis alignments, the geometric driving axis is automatically determined as a reference line for the toe measurements on the front wheels. The reference measurement is a vital requirement for correct measurements on modern Opel/Vauxhall vehicles. |
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