If you find that the shock absorber has oil leakage, the first thing you need to do is to tighten the cylinder head nut. If the shock absorber is still leaking after tightening, the oil seal and gasket may be damaged and invalid, and new seals should be replaced. If the oil leakage still cannot be eliminated, pull out the shock absorber rod. If you feel a hairpin or change in weight, check whether the gap between the piston and the cylinder barrel 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 shock absorber does not leak oil, check the shock absorber connecting 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 disassembled to check whether the matching gap between the piston and the cylinder is too large, whether the cylinder is strained, whether the valve is well sealed, whether the valve clack and the valve seat are tightly attached, and whether Whether the extension spring of the vibrator is too soft or broken, repair it by grinding or replacing parts according to the situation