For the rapid decay of the car frame and body vibration, to improve driving comfort, the vehicle suspension system generally are equipped with shock absorbers, which now widely used in the car is a two-way role cylindrical shock absorber.
The shock absorber is the vulnerable part. shock absorbers, working good or bad, will directly affect the smooth driving of car and the life of other car parts, so we should keep the shock absorbers often in good working condition. The following methods can test the shock absorbers.
1. Make the car travel 10km on the road with poor conditions, then stop to touch the shock absorber housing. If it is not hot enough, it means that there is no resistance within the shock absorber, which does not work. At this time, proper lubricant can be added, and then make the test again. If the shock absorber housing gets hot, the internal shock absorber lack of oil, so add enough oil; otherwise you have to check the shock absorber whether it is good.
2. Press firmly on the bumper, then release, and the shock absorbers work well if the car jumps 2-3 times.
3. When the car is slowly driving, make a emergency braking, if the car has a severe vibration, it means that the shock absorber has problems.
4. Remove the shock absorber upright, and make the lower end of the connecting ring caught in the vise, pull the compression damping rod several times. Then there should be a stable resistance, and the pull up resistance should be greater than the downward pressure resistance, if the resistance is unstable or there is no resistance, the internal shock absorber may lack of oil or valve parts damaged, you have to repair or replace the parts.
Making sure the shock absorbers have a problem or failure, you should check the shock absorbers whether there are traces of oil leaking.
Oil seal gasket and sealing gasket damaged, or oil storage cylinder head nut loose. Maybe the oil seals gaskets damaged to fail, then you should replace by new seals. If you still can not eliminate oil leaking, pull out the shock absorbers. If the severity is not a time to further, check that whether the clearance between the piston and cylinder is too large, the shock absorber piston rod is bending, and there is a scratch or pull marks between the surface of the piston rod and cylinder tube, or not.
If there is no leakage phenomenon of the shock absorber, you should check the shock absorbers connecting pins, connecting rods, connecting hole, rubber bushing for damage, desoldering, break or fall off . If these were normal, you should have a further decomposed shock absorbers to check that wether the gap between the piston and cylinder is too large, the cylinder gets injury, the valve seal is good, valves and valve seat are tight fitting, as well as the stretching of the shock absorber spring is too soft or broken. Then find the best way to repair or relace the parts according to the problems.
In addition, the damper will appear beep fault in the actual use, which mainly due to the colliding between the shock absorber and the steel plate spring, frame, shaft, making the mountings damage or loss, the damper dust tube deformation, and oil inadequate. So the reasons should be identified, to help you repair in a easy way.
For some car problems, there are also some car diagnostic tools like elm327 bluetooth and x431 diagun, you can visit www.vtoolshop.com for more.
The shock absorber is the vulnerable part. shock absorbers, working good or bad, will directly affect the smooth driving of car and the life of other car parts, so we should keep the shock absorbers often in good working condition. The following methods can test the shock absorbers.
1. Make the car travel 10km on the road with poor conditions, then stop to touch the shock absorber housing. If it is not hot enough, it means that there is no resistance within the shock absorber, which does not work. At this time, proper lubricant can be added, and then make the test again. If the shock absorber housing gets hot, the internal shock absorber lack of oil, so add enough oil; otherwise you have to check the shock absorber whether it is good.
2. Press firmly on the bumper, then release, and the shock absorbers work well if the car jumps 2-3 times.
3. When the car is slowly driving, make a emergency braking, if the car has a severe vibration, it means that the shock absorber has problems.
4. Remove the shock absorber upright, and make the lower end of the connecting ring caught in the vise, pull the compression damping rod several times. Then there should be a stable resistance, and the pull up resistance should be greater than the downward pressure resistance, if the resistance is unstable or there is no resistance, the internal shock absorber may lack of oil or valve parts damaged, you have to repair or replace the parts.
Making sure the shock absorbers have a problem or failure, you should check the shock absorbers whether there are traces of oil leaking.
Oil seal gasket and sealing gasket damaged, or oil storage cylinder head nut loose. Maybe the oil seals gaskets damaged to fail, then you should replace by new seals. If you still can not eliminate oil leaking, pull out the shock absorbers. If the severity is not a time to further, check that whether the clearance between the piston and cylinder is too large, the shock absorber piston rod is bending, and there is a scratch or pull marks between the surface of the piston rod and cylinder tube, or not.
If there is no leakage phenomenon of the shock absorber, you should check the shock absorbers connecting pins, connecting rods, connecting hole, rubber bushing for damage, desoldering, break or fall off . If these were normal, you should have a further decomposed shock absorbers to check that wether the gap between the piston and cylinder is too large, the cylinder gets injury, the valve seal is good, valves and valve seat are tight fitting, as well as the stretching of the shock absorber spring is too soft or broken. Then find the best way to repair or relace the parts according to the problems.
In addition, the damper will appear beep fault in the actual use, which mainly due to the colliding between the shock absorber and the steel plate spring, frame, shaft, making the mountings damage or loss, the damper dust tube deformation, and oil inadequate. So the reasons should be identified, to help you repair in a easy way.
For some car problems, there are also some car diagnostic tools like elm327 bluetooth and x431 diagun, you can visit www.vtoolshop.com for more.
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