A: First, let the car stop after driving for 10km on the road with poor road conditions, and touch the shock absorber shell by hand. If it is not hot enough, there is no resistance inside the shock absorber, and the shock absorber does not work. At this time, the appropriate lubricating oil can be added, and then the test is carried out. If the outer casing is heated, the inside of the shock absorber is lacking in oil, and sufficient oil should be added; otherwise, the shock absorber is invalid. Second, press the bumper hard and then release. If the car has 2~3 jumps, the shock absorber works well. Third, when the car is driving slowly and braking urgently, if the car vibration is more severe, the shock absorber has a problem. 4. Remove the shock absorber and erect it, and clamp the lower end connecting ring on the vise. Pull the damping rod several times. At this time, there should be stable resistance. The resistance to pull up (recover) should be greater than The resistance when pressing down, such as unstable or no resistance, may be caused by lack of oil inside the shock absorber or damage to the valve parts. Repair or replacement of parts should be carried out.
