一辆桑塔纳轿车在车速为100km/h左右行驶时,其转向盘激烈抖动。检查底盘下方各连接件,均未发现异常,故初步诊断为前轮动不平衡。拆下两前轮后,发现两轮轮圈内侧堆积了许多泥块。把轮子直接装上动平衡机进行试验,测试数据(见表1)表明两前轮的动不平衡量(在轮辋边缘上)都比较大。在清理两轮轮圈内侧堆积的泥块后,重新进行动平衡试验,测试数据 A Santana car driving at a speed of 100km / h or so, the steering wheel intense shaking. Check the chassis below the connector, were found no abnormalities, so the initial diagnosis of the first round of unbalanced. After removing the two front wheels, a large number of mud pieces were found inside the two wheels. The wheel mounted directly on the dynamic balancer for testing, the test data (see Table 1) shows that both front-wheel dynamic unbalance (at the edge of the rim) are relatively large. After cleaning up the lumps accumulated inside the two wheels, the dynamic balance test and the test data