When a small suction truck determines that there is a problem or failure of the shock absorber, it should first check the shock absorber for signs of oil leakage or old oil leakage.
Suction truck oil seal gaskets and gaskets were broken and damaged, and the fuel tank cap nuts were loosened. It may be the oil seal and the gasket failure. Replace the new seal. If you still can not eliminate the oil spill, you should pull out the shock absorber, if you feel there is a hairpin or different severity, and then further check the piston and cylinder bore is too large, the shock absorber piston rod is bent, the piston rod Whether the surface and cylinder are scratched or scratched.
If there is no oil leakage in the shock absorber, check the shock absorber connecting pin, connecting rod, connecting hole, rubber bush, etc. for damage, loosening, cracking or falling off. If the above inspection is normal, the shock absorber should be further decomposed to check whether the clearance between the piston and the cylinder is too large, whether the cylinder is damaged, whether the valve seal is good, and whether the valve flap and the valve seat are tightly adhered or not. Whether the extension spring of the shock absorber is too soft or broken, it is repaired or replaced according to the situation.
In addition, shock absorbers may malfunction in actual use. This is mainly due to shock absorbers colliding with leaf springs, frames, or shafts, damage or detachment of rubber pads, and deformation of the shock absorber dust caps. If it is caused by lack of reasons, the cause should be ascertained and repaired.
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