Faulty shock absorbers? Common faults and repairs of shock absorbers

Common fault 1 make the car stop after driving 10km on the road surface with poor road conditions, 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 test, if the shell is hot, it is a lack of oil inside the shock absorber, and sufficient oil should be added; Otherwise, the shock absorber has failed.

2 Press the bumper firmly and then release, if the car has 2 3 jumps, then the shock absorber is working well.

3 When the car is driving slowly and braking urgently, if the car vibrates violently, it means that there is a problem with the shock absorber.

4. Remove the shock absorber to stand upright, and clamp the lower end connecting ring on the vice, pull and press the damping rod several times, at this time there should be a stable resistance, the resistance to pull up (restoration) should be greater than the resistance when pressing down, if the resistance is unstable or there is no resistance, it may be that the shock absorber is lacking oil inside or the valve parts are damaged, and the parts should be repaired or replaced.

After determining that the shock absorber is faulty or failing, you should first check the shock absorber for oil leakage or signs of old oil leakage. The oil seal gasket and sealing washer are broken and damaged, and the oil storage cylinder head nut is loose. If oil leakage is found, first tighten the cylinder head nut, if the shock absorber is still leaking, it may be that the oil seal and sealing gasket are damaged and failed, and the new seal should be replaced.

If the oil leakage still cannot be eliminated, the shock absorber rod should be pulled out, if you feel a hairpin or a difference in weight, further check whether the gap between the piston and the cylinder barrel is too large, whether the piston connecting rod of the shock absorber is bent, and whether the piston connecting rod surface and cylinder barrel are scratched or stretched.

If there is no oil leakage in the shock absorber, the shock absorber connecting pin, connecting rod, connecting hole, rubber bushing, etc. should be checked for damage, desoldering, cracking or falling off.

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1. Press the front or rear of the car hard, and then release it immediately, if the vehicle has 1 2 bounces, it means that the shock absorber is working well;

2. If the car is driving slowly and then braking urgently, if the car vibrates violently, it means that there is a problem with the shock absorber;

3. If the vehicle bounces 3-4 times when passing through the speed bump, it means that there is a problem with the shock absorber;

4. Observe whether there is oil leakage on the outside of the shock absorber;

5. Drive on the road surface in good condition and hear less.

Depending on the situation, if there is an oil leak or abnormal noise, and we usually drive on the road conditions are not bad, and the number of kilometers of the car is not too much, in this case, only one can be replaced, and there is no need to replace two. If the road conditions are not very good every day, often run some non-paved roads, and the number of kilometers of the car is more, in this case, it is best to replace the left and right at the same time. Because the damage of the shock absorber has a lot to do with our usual road conditions, if we often walk on non-paved roads, the performance of the shock absorber will be attenuated more.

If you only replace one, there is a large difference in hardness between the two sides, one side is hard and the other is soft, which will affect the stability of the vehicle.

Shock absorbers are usually checked every 100,000 km, and there may be slight differences in service intervals between different models. The life of the shock absorber is generally relatively long, and it is no problem to use it for 5-6 years or 8-100,000 kilometers under normal circumstances. In addition, if the shock absorber is replaced, try to choose a high-quality product, although the counterfeit shock absorber is cheap, but the life is less than half of the original shock absorber.

In the stretching process, oil leakage will be caused by poor sealing, and oil leakage will not play a role in damping vibration, and there will be a serious bumpy feeling when driving. What's more, it will suddenly fail at high speed, causing the body to tilt, and the safety of people and vehicles will be seriously threatened. Hope, thank you!

There are two situations of high-speed oscillation, one is that the oscillation becomes stronger with the increase of vehicle speed, and the other is oscillation occurs at a higher speed, which causes the steering wheel to shake. The drive axle can be erected first, the front wheel is plugged with safety plug blocks, the engine is started and gradually shifted into the high-speed gear, so that the drive wheel reaches the final test oscillation speed. If both the body and steering wheel shake at this time, it is caused by the drivetrain.

Because the front axle of the front wheel is in a stationary state at this time, if the final test oscillation speed is reached, the car does not shake, then the reason for the oscillation is that the front axle part of the car is faulty; Check whether the positioning angle and toe of the front wheel meet the requirements, and adjust if it is out of alignment; Set up the front axle and test the wheels to check the dynamic balance of the wheels and whether the tires are too deformed. If necessary, a good wheel can be replaced for a comparative test; Check whether the front axle and frame are deformed, check whether the transmission shaft is bent, and make the dynamic balance of the transmission shaft when possible.

The failure of the shock absorber is nothing more than oil leakage, the shock absorber is in front of and behind the car, the shock absorber is screwed at too high speed or has done a speed bump, or in the case of uneven road surface, the speed of the car is fast, so that the shock absorber will break off by itself, or it is broken, and finally lead to oil leakage in your vehicle, in this case, you must replace the shock absorber in time to ensure the normal driving of the vehicle.

When the car is moving, there will always be a rattling sound behind it. For the most part. It is related to the road police, but also to the shock absorber of the car itself.

There is always a sound of malfunction. It can only be your own car, the shock absorber is broken or the shock absorber is leaking. Need to repair in a timely manner, shock absorbers.

See if there's a shortage of oil, add some oil and see.

Common faults and repairs of shock absorbers

In order to make the vibration of the frame and the body decay rapidly, and improve the smoothness and comfort of the car, the automobile suspension system is generally equipped with shock absorbers, and the two-way acting cylinder shock absorber is widely used in the car.

The shock absorber is a vulnerable part in the process of car use, the shock absorber works well, will directly affect the stability of the car and the life of other parts, so we should make the shock absorber often in good working condition. The following methods can be used to verify whether the shock absorber is working well.

1.Make the car stop after driving 10km on the road surface with poor road conditions, 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 is hot, it is a lack of oil inside the shock absorber, and sufficient oil should be added; Otherwise, the shock absorber is out of order.

2.Press the bumper hard and then let go, if the car has 2 or 3 jumps, the shock absorber is working well.

3.When the car is driving slowly and braking urgently, if the car vibrates violently, it means that there is a problem with the shock absorber.

4.Remove the shock absorber to stand upright, and clamp the lower end of the connecting ring on the vice, pull and press the damping rod several times, at this time there should be a stable resistance, the resistance force of pulling up should be greater than the resistance when pressing down, if the resistance is unstable or no resistance, it may be that the shock absorber is lacking oil inside or the valve parts are damaged, and the parts should be repaired or replaced.

After determining that the shock absorber is faulty or failing, you should first check the shock absorber for oil leakage or signs of old oil leakage.

The oil seal gasket and sealing washer are broken and damaged, and the oil storage cylinder head nut is loose. It may be that the oil seal and sealing gasket are damaged and failed, and the new seal should be replaced. If the oil leakage still cannot be eliminated, the shock absorber should be pulled out, and if it feels a difference in weight, further check whether the gap between the piston and the cylinder barrel is too large, whether the piston connecting rod of the shock absorber is bent, and whether the piston connecting rod surface and cylinder barrel are scratched or pulled marks.

If there is no oil leakage in the shock absorber, the shock absorber connecting pins, connecting rods, connecting holes, rubber bushings, etc. should be checked for damage, desoldering, cracking or falling off. If the above inspection is normal, the shock absorber should be further decomposed, check whether the matching gap between the piston and the cylinder barrel is too large, whether the cylinder barrel is strained, whether the valve seal is good, whether the valve disc and the valve seat are tightly fitted, and whether the extension spring of the shock absorber is too soft or broken, and repair or replace the parts according to the situation.

In addition, the shock absorber will make a sound in the actual use of the fault, which is mainly due to the shock absorber and the leaf spring, frame or shaft collision, rubber pad damage or fall off, shock absorber dust cylinder deformation, insufficient oil and other reasons to lead the punch code, should be found out the cause, to be repaired.

Hello, the current number of people consulted may not reply in a timely manner, if it is a vehicle failure problem, it is recommended to use the computer to detect the specific cause of the failure, search for "car master" can be consulted at any time to ask the car to ask the question, 24 hours ** answer.

The performance of automobile shock absorber failure is as follows: 1. Oil leakage. The shock absorber is inspected through the wheel arch with a flashlight, and when an oil leak is found on the outside of the shock absorber, it indicates that the shock absorber has been damaged.

2. The chassis is loose. When the vehicle is driving in a bush or to a bumpy road, if it is found that the body attitude is too bumpy and swaying, it is generally a problem with the shock absorber. 3. Abnormal noise.

If the shock absorber makes an abnormal noise when the vehicle is driving on a bumpy road, it is very likely that the shock absorber is out and Zheng Wei is the cause of the damage. 4. Tire wear is uneven. When the shock absorber is damaged, the wheels will vibrate unevenly during driving.

Causes the wheels to roll and other phenomena, so that the tire part that touches the ground is seriously worn, and the untouched part is not affected, and over time it forms an uneven shape of wear, and the vehicle is unstable, and it also increases the bump discomfort.