The front brake disc of the car is subjected to loads and impact loads, and the wheels and bearings and the drive shaft are easily damaged. During the inspection, the bearing rotation should be flexible and free from sticking. There is no obvious gap feeling in the axial and radial directions, otherwise it should be repaired or replaced. The bearing shell should be free of cracks. If the bearing is less deformed, it can be tapped and corrected; if the deformation is large, it should be replaced.