As an important part of the chassis,  suspension maintenance and troubleshooting are very important. If the suspension leaf spring breaks along the center hole, check whether the U-bolt is loose. If it is loose, the U-bolts need to be replaced, tightened, and inspected regularly.

If the leaf spring bushings and lifting lug bushings are worn, it may be that the grease is not added according to the specified mileage. We only need to maintain and lubricate according to the regulations. When the steering wheel vibrates, the vibration in the cab does not attenuate.

It is possible that the shock absorber has failed. Just replace or repair the shock absorber. If the impact is serious when driving on uneven roads, It’s possible that the shock absorber is stuck. Just replace or repair the shock absorber.