The reasons for the banging of automobile chassis include interference between parts, looseness of bolts or nuts, failure of universal joint of transmission shaft, abnormal noise of hub bearing and so on. Because the chassis has been in a very bad working environment for a long time, its damage and erosion are also the biggest. Therefore, it is one of the important projects to check the corrosion degree of the chassis in time and effectively protect the chassis. The inspection of automobile chassis focuses on "diligence", and a smart owner must be a diligent owner. The function of chassis can not be ignored, and regular inspection of its working condition is also a necessary guarantee for driving safety.

1, interference between parts, two parts affect each other due to impact or installation of other equipment. Solution: Only through plastic repair or replacement of related parts can there be no interference between parts.

2. The bolt or nut is loose, and the bolt is naturally loose when driving on a road with poor road conditions for a long time; Improper disassembly and installation will damage the bolts; Insufficient tightening torque or incorrect bolt specifications. Solution: Tighten or replace bolts and nuts.

3. Failure of the universal joint of the transmission shaft, rupture of the dust cover or failure of timely maintenance due to oil leakage; Solution: Replace the new transmission shaft universal joint.

4. Abnormal sound caused by damage of each ball head, suspension and connecting bracket, failure caused by loose ball head or aging and rupture of rubber pad after long-term use. Solution: Replace the ball head or support pad with a new one.

5. The wheel hub bearing has abnormal sound and "buzzing" sound at a certain speed, which increases with the increase of speed. Most of them are caused by the ablation of hub bearings. Solution: Replace the hub bearing with a new bearing.