Analysis on Maintenance Skills of Automobile Shock Absorber
Note: It is better to change two shock absorbers at one time when changing them. If one front or rear shock absorber is faulty, it is required to change the front or rear shock absorber with one steam damper. Since the car is under uneven balanced force when changing one, the shock absorber will be under different force, which will lead to shock absorber problems!
2、 Precautions for purchase of shock absorber
1. Before purchasing goods, please be sure to check the model, displacement and other information of your car to ensure that you can buy the correct model of accessories. You can query your car care manual, and also use the "self-help care" function based on the car care website.
2. Each vehicle has four shock absorbers, which are front left, front right, rear left and rear right. If the shock absorbers need to be replaced, it is better to replace two at a time. If there is a problem with one front or rear shock absorber, it is required to replace the front or rear shock absorbers with one steam to prevent the vehicle from uneven balanced force, resulting in different force on the shock absorbers and presenting shock absorber problems.
3. Choose quality products. Although the fake shock absorber is cheap, its service life is less than half of the original shock absorber. In the process of stretching, oil leakage will occur due to poor sealing. If the oil body leaks, it will not play a role in vibration reduction, and will produce a serious sense of stability when driving. What's more, when driving at high speed, it will suddenly fail, causing the car body to tilt, and the safety of people and vehicles will be seriously threatened.

How to test the safety performance of pneumatic butterfly valve?
As an important link component in engineering technology, pneumatic butterfly valves are widely used in aerospace, petrochemical, mining electronics, machinery and shipbuilding, medical and health, textile electronics, energy architecture and other fields. The performance testing requirements for the quality of pneumatic butterfly valves used in these industries are stricter, especially the pressure test and air tightness test.
The pressure test of pneumatic butterfly valve belongs to the safe performance index test. The purpose of stopping the pressure test is to detect whether the hose has abnormal failure modes such as leakage and parts damage. As the qualified product request does not allow abnormal failure modes such as leakage or parts damage.
Dry and clean air, or nitrogen or other maintenance gases as required, are used as the test medium for the air tightness test. The air tightness test is stopped to check whether there is air leakage in the hose. Test method: block one end of the hose to be tested, connect the other end with the air outlet installed under pressure, immerse the hose in water, remove the bubbles adsorbed on the mesh sleeve, hold the pressure for 10min after the air pressure is stable, and check whether there is air leakage on the test piece. Four points of cracking of pneumatic butterfly valve in daily life
Pneumatic butterfly valves often break in daily use, and we mainly have the following four reasons:
First, quality problems of pneumatic butterfly valve
Some people may have quality problems when they buy pneumatic butterfly valves at the beginning, so they should buy them when they are right.
Second, there is dislocation vibration between the pneumatic butterfly valve and the cylinder head, and mechanical fatigue in daily use, there will be dislocation vibration between the pneumatic butterfly valve and the bar head.
Third, the injection pressure of the pneumatic butterfly valve is wrong
Fourth, oil return blockage of pneumatic butterfly valve
In the daily use of pneumatic butterfly valve, if it is used for a long time, the problem of oil return blockage will occur!
The above four point pneumatic butterfly valve often shows the reason of fracture in application, and I hope it can help you. If what I introduced is not detailed enough, please understand.