Auto shock absorber maintenance

- Jan 11, 2018 -

After determining whether the shock absorber has a problem or failure, we should first check whether the shock absorber is leaking oil or have traces of old oil leakage.

Oil seal gasket, seal ring rupture damage, storage cylinder cover nut loose.

May be oil seal, seal gasket damage failure, should replace the new seal.

If still can't eliminate the oil spill, should pull out of the shock absorber, if feel the hairpin or weight, will have a further check whether the clearance between the piston and cylinder is too large, the shock absorber piston connecting rod for bending, the piston connecting rod surface and the cylinder have scratches or marks.

If the shock absorber does not have oil leakage, it should check whether there is any damage, dissoldering, rupture or falling out of the shock absorber connection pin, connecting rod, connection hole, rubber bushing, etc.

If the above check is normal, should be further decomposed shock absorber, check whether the fitting clearance between the piston and cylinder is too large, a cylinder with and without strain, valve seal are in good condition, whether the disc and seat nicely, and whether the presence of shock absorber spring is too soft, or broken, grinding according to the circumstance or change a way to repair.

In addition, the shock absorber in be used actually appear noise fault, this is mainly due to the shock absorber with steel plate spring, frame, or shaft collide, rubber gasket damage or loss and shock absorber dust drum deformation, caused the oil shortage, should find out the reason, to be repaired.

The shock absorber shall perform the performance test on the special test bench after the inspection and repair. When the resistance frequency is at 100 + 1mm, the resistance of its stretching stroke and compression stroke should meet the requirements.

For example, the maximum resistance of the stretch trip of CAl091 is 2156~2646N, and the maximum resistance of compression stroke is 392~588N.

The maximum resistance of the east windmill stretch is 2450~3038N, and the maximum resistance is 490~686N.

If there is no test condition, we can also adopt a kind of experience, with an iron rod through the shock absorber in the bottom rings, with his feet on the side, holding the rings on the reciprocating 2 ~ 4 times, when pull up resistance is very big, pressing down on them without taxing, and stretching resistance compared with before repairing recovered, no idle, indicates basic normal shock absorber


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