大中型轮式拖拉机转向节轴和支架管,因碰撞而向后倾斜;转向节轴、支架管、前轴、定位销轴,因紧固螺丝松动,引起定位销轴和销孔的磨损,使前轮产生一个向后的位移角度,造成变形和磨损。一侧前后轮轴距短于另一侧,引起拖拉机行驶跑偏,行驶中须经常用力向一侧拢住方向盘,使驾驶 Large and medium-sized wheeled tractor steering knuckle shaft and bracket tube, due to collision and backward tilt; steering knuckle shaft, bracket tube, front axle, locating pin shaft, due to loose tightening screws, causing locating pin and pin hole wear, so that The front wheel produces a rearward displacement angle, causing deformation and wear. One side of the front and rear wheelbase shorter than the other side, causing the tractor running deviation, the driving force must often side to close the steering wheel, so that driving