Corrective maintenance. The fracture of Dongfang e70 front axle is mostly I-beam, which can bear heavy load. The position accuracy of the main pin hole directly affects the positioning accuracy of the front wheel of the automobile, and has great influence on the portability, stability and tire wear of the automobile. During maintenance, I-beams should be carefully checked and corrected. If it can't be solved, it should be repaired at the garage in time.