Based on the principle analysis of the vehicle driving wandering and the computer simulation validation, the vehicle driving wandering caused by the variation of these parameters such as camber angle, toe angle, caster moment arm, scrub radius, parallelism between front axle and rear axle, is analyzed and discussed.

It was introduced that the process of the D505 laser axes adjusting meter in installing drive equipment,using the point-test of 9-12-3 to measure the parallel deviation and the angle deviation of the axes of the electriclocomotive and the gear case, at the same time, to measure the adjustment value and level up the value of the frontfeet and the back, to do a real time adjustment.