Shock absorbers are very important for driving on bumpy roads. Automobile shock absorbers are generally installed on the automobile suspension system. If the shock absorber does not work properly, it will cause the life of parts of the car to be reduced, and also greatly reduce the smoothness of the car. The personnel also feel the bumps are quite uncomfortable.
Here is how to check the efficiency of shock absorbers:
1. You can drive at a low speed first, and then brake sharply. If you find that the car shakes a lot and the human body feels uncomfortable, there is a problem with the shock absorber.
2. Press the bumper firmly, and then release it. If the car jumps 2 or 3 times, it means that the shock absorber is working well.
3. Make the car stop after driving 10km on the road with poor road conditions and touch the shock absorber shell with your hands. If it is not hot enough, it means that there is no resistance inside the shock absorber and the shock absorber does not work. At this time, you can add appropriate lubricating oil, and then carry out the test. If the shell heats up, the shock absorber is short of oil, and enough oil should be added; otherwise, the shock absorber has failed.
4. Remove the shock absorber and stand it upright, and clamp the lower end connecting ring to the vise, and then forcefully pull the damping rod several times. At this time, there should be a stable resistance, and the resistance of pulling upwards should be greater than when pressing downwards If the resistance is unstable or no resistance, it may be due to lack of oil inside the shock absorber or damage to the valve parts. Repair or replacement parts should be carried out.
Oil leakage is one of the reasons that cause the shock absorber to work abnormally. If the shock absorber does not leak oil, check the shock absorber connecting pin, connecting rod, connecting hole, rubber bushing, etc. for damage, desoldering, cracking or falling off. If the above inspection is normal, the shock absorber should be further disassembled to check whether the matching clearance between the piston and the cylinder is too large, whether the cylinder is strained, whether the valve seal is good, whether the valve clack and the valve seat are tightly fitted, and whether Whether the extension spring of the shock is too soft or broken, it should be repaired by grinding or replacing parts according to the situation.
If you find a malfunction of the shock absorber, it is mainly caused by the shock absorber colliding with the leaf spring, the frame or the axle, the rubber pad is damaged or falling off, the shock absorber dust tube is deformed, and the oil is insufficient.
The above four methods can effectively test whether the shock absorber is working properly. For the first method, it is best to use less, because frequent sudden braking can easily cause damage to the brake system. The second method of pressing the bumper is recommended for everyone to try. And it's very convenient and the effect is obvious. Before long distances in normal times, you should also check whether the shock absorber is leaking oil. If there is, it will also cause the source of the shock absorber malfunction in the halfway.