Vibration damper testing methods

1. Drive the car for 10km on a road with poor conditions and then stop. Touch the shock absorber housing. If it's not hot enough, it indicates there's no resistance inside the shock absorber, meaning it's not working. In this case, add appropriate lubricating oil and test again. If the housing gets hot, the shock absorber is short of oil and needs more oil; otherwise, the shock absorber is faulty.

 

2. Press down firmly on the bumper and then release. If the car bounces 2-3 times, the shock absorber is working properly.

 

3. When the car is moving slowly and then brakes suddenly, if the car vibrates violently, the shock absorber is faulty.

 

4. Remove the shock absorber and stand it upright. Clamp the lower connecting ring in a vise and pull and compress the shock absorber rod several times. There should be stable resistance. The resistance when pulling upwards (restoring) should be greater than the resistance when pressing downwards. If the resistance is unstable or there is no resistance, it may be due to insufficient oil inside the shock absorber or damaged valve parts, requiring repair or replacement.