Common problem solving for car four wheel alignment

Common problem solving for car four wheel alignment

1. Why is it impossible to run a circle after the four-wheel alignment is done?

A: The biggest possibility: First, the four-wheel positioning machine is not allowed or the measurement operation is not standardized. Second, the chassis of the car is not good, and important parts such as the neck and the tie rod are worn out.

2. In the measurement process, how can the interference of external (subjective and objective) factors be eliminated as much as possible to ensure the accuracy of the data?

A: If you want to measure the accuracy of four wheel alignment, you must have the following requirements:

1 The accuracy of the four-wheel positioning machine must be less than ±0.06 degrees and annual correction.

2 The learning machine must be kept at the front, back, left and right levels.

3 The corner plate must be free to rotate, slide left and right and slide back and forth.

4 The rear skateboard must be free to slide left and right and have a rotation of ±5 degrees.

5 must do the steel ring compensation.

6 The nose level and the camber angle must be accurately maintained when measuring the toe angle.

7 When the post-tilt angle is measured, the angle of rotation (eg 20 degrees) shall be determined and the hand brake shall be pulled to prevent the body from sliding backwards.