前轮摆振是指汽车直线行驶时 ,前轮以一定的振幅和频率绕转向主销轴左右摆动。汽车前轮摆动严重时 ,车身左右晃动 ,方向盘难以控制。前轮摆振破坏了汽车行驶的稳定性 ,影响汽车的行驶安全 ,还加速了转向系的磨损 ,所以一经发现 ,应查明原因并及时排除。其方法是 :（１）先查方 The front wheel shimmy refers to the car when driving straight, the front wheel to a certain amplitude and frequency around the steering pin pivot around. When the car front wheel swing serious, shaking around the body, the steering wheel is difficult to control. The front wheel shimmy damaged the stability of the car, affecting the driving safety of the car, but also accelerated the wear of the steering system. Once found, the cause should be identified and promptly eliminated. The method is: (1) first check the square