1. In order to improve and update the original functional status;
2. The car is subjected to excessive up and down and left and right vibrations, nodding when braking and irregular tire wear;
3. Excessive tilt or sway of the car when turning;
4. The assembly shell is worn or damaged, causing shock absorber oil leakage and affecting shock absorber performance; oil leakage is the most problematic situation for shock absorbers, and there are many reasons for oil leakage, the most common is caused by rampage Caused by cracks.