Motorcycle shock absorbers can be divided into two types: single-tube shock absorbers and double-tube shock absorbers. Double-cylinder motorcycle shock absorbers have two inner and outer cylinders, and the piston moves in the inner cylinder. When the piston rod enters and withdraws, the volume of the oil in the inner cylinder increases and contracts, so the oil balance in the inner cylinder is maintained by exchange with the outer cylinder.
Therefore, there are four valves in the motorcycle damper, that is, in addition to the two throttle valves on the piston mentioned above, there are flow-through valves and compensation valves for the exchange between the inner and outer cylinders. Compared to the twin-cylinder type, the single-cylinder damper has a simple structure and reduces a valve system.
It is equipped with a floating piston in the lower part of the cylinder to form a closed air chamber under the floating piston, which is filled with high-pressure nitrogen. The above-mentioned change in the level of the liquid due to the movement of the piston rod into and out of the oil is automatically adapted by the floating of the floating piston.
In addition to the two types of motorcycle shock absorbers described above, there are also resistance adjustable shock absorbers. It can change the size of the orifice by external operations. The car uses the electronically controlled shock absorber as a standard equipment, detects the driving state through the sensor, and calculates a suitable damping force by the computer, so that the damping force adjusting mechanism on the shock absorber automatically works.
After confirming that there is a 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 the gasket are damaged, and a new seal should be replaced. If the oil leakage still cannot be eliminated, pull out the shock absorber. If there is a hairpin or light weight, check whether the gap between the piston and the cylinder is too large, and whether the shock absorber piston rod is bent or not. Whether the surface and the cylinder are scratched or scratched.
If there is no oil leakage in the motorcycle shock absorber, check the shock absorber connection pin, connecting rod, connecting hole, rubber bushing, etc. for damage, desoldering, cracking or falling off. If the above inspection is normal, the shock absorber should be further decomposed to check whether the matching clearance between the piston and the cylinder is too large, whether there is a strain in the cylinder, whether the valve seal is good, whether the valve flap and the valve seat are tightly attached, and Whether the tension spring of the shock absorber is too soft or broken, and repair or repair according to the situation.