Motorcycle shock absorbers can be divided into two categories: single-tube shock absorbers and double-tube shock absorbers. Double-tube motorcycle shock absorbers mean that the shock absorber has two inner and outer cylinders. The piston moves in the inner cylinder. With the entry and extraction, the volume of oil in the inner cylinder increases and shrinks. Therefore, it is necessary to exchange with the outer cylinder to maintain the balance of oil in the inner cylinder.

Therefore, there are four valves in the double-cylinder motorcycle shock absorber, that is, in addition to the two throttle valves on the piston mentioned above, there are also flow valves and compensation valves installed between the inner and outer cylinders to complete the exchange function. Compared with the double-tube type, the single-tube type shock absorber has a simple structure and reduces a set of valve systems.

It is equipped with a floating piston in the lower part of the cylinder and forms a closed air chamber under the floating piston, which is filled with high-pressure nitrogen. The above-mentioned changes in the liquid level caused by the piston rod in and out of the oil are automatically adapted to the floating of the floating piston.

In addition to the above two types of motorcycle shock absorbers, there are also adjustable resistance shock absorbers. It can change the size of the orifice by external operation. Automobiles use electronically controlled shock absorbers as standard equipment. The driving state is detected by sensors, and the computer calculates the suitable damping force, so that the damping force adjustment mechanism on the shock absorber works automatically.

After determining the problem or failure of the motorcycle shock absorber, you should first check whether the shock absorber is leaking or has traces of old oil leakage. It may be that the oil seal and sealing gasket are damaged and invalid, and new seals should be replaced. If the oil leakage still cannot be eliminated, pull out the shock absorber. If you feel a hairpin or change in weight, check whether the gap between the piston and the cylinder is too large, whether the shock absorber piston connecting rod is bent, and the piston connecting rod Whether there are scratches or pull marks on the surface and cylinder.

If the motorcycle shock absorber does not leak oil, check the shock absorber connecting pin, connecting rod, connecting hole, rubber bushing, etc. for damage, deselding, cracking or falling off. If the above inspection is normal, the shock absorber should be further disassembled to check whether the matching gap 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 attached, and Whether the extension spring of the shock absorber is too soft or broken, repair it by grinding or replacing parts according to the situation.