How does shock absorber oil leakage occur?

There are two main reasons for oil leakage: oil seal damage and connecting rod surface damage.

1.The oil temperature is too high, causing the oil seal to age and crack, as shown in the figure; resulting in oil leakage and damping failure, it must be replaced

2.The lateral force is too large, causing serious eccentric wear of the connecting rod, as shown in Figure 2-5. This causes oil leakage and damping failure, and must be replaced.

● There are two types of connecting rod surface damage:

1) Excessive lateral force causes abnormal wear of the connecting rod surface in the working section, as shown in Figure 2-6, resulting in oil seal damage, leakage of working oil, and the shock absorber must be replaced.

2) The connecting rod surface is damaged. As shown in Figure 2-7.

The oil seal is damaged, the working oil leaks, and the shock absorber must be replaced.

Recommended method for determining oil leakage on site: Pull the shock absorber to its longest position and observe the part covered by the dust cover. If the reservoir of this part is dry and has no oil stains, it can be determined that the shock absorber is not leaking oil. For shock absorbers that are determined not to be leaking oil, they can be reinstalled and used on the vehicle without replacing the shock absorber.

If there are signs of oil dripping from the part covered by the dust cover, it can be judged as oil leakage. The shock absorber with oil leakage needs to be replaced.