The four-wheel alignment system of the vehicle is a maintenance item of the vehicle, which needs to be repaired when the tires are misaligned and the direction deviates.
The four-wheel alignment system mainly adjusts the caster, caster, camber and toe-in of the front wheels. The caster angle of the kingpin and the toe-in of the rear wheel need to be adjusted at the rear. Only in this way can the quarter positioning of the vehicle be completed. Before four-wheel alignment, it is necessary to find the relevant parameter data of the vehicle and adjust it according to the data.