A, check whether the relevant fit size of the gear train is caused by poor return. If the opening of the front fork is too large, add a gasket of corresponding size to solve it; If the opening size of the front fork is too small, please correct the corresponding size.
Improper opening size of front fork will easily lead to early wear and tear of oil seal, oil leakage and even the possibility of front reduction fracture.
B, check the dimensions of the upper and lower shaft pins after subtraction, and then correct the corresponding dimensions to solve the problem.
Severe splayed installation is likely to cause early wear and tear of oil seal, oil leakage and even shock absorber fracture.
C when the relevant assembly dimensions meet the requirements, it is normal that the front axle cannot completely return to its original position by about 20~40mm, because it bears the weight of the vehicle. No matter what the above reasons are, it is best to replace the shock absorber with a new one to prevent accidents.