毛病体现：轿车行进时速在80公里至90公里之间时，呈现方向盘颤动现象，时速超越90公里则恢复正常。
the trouble is: when the car travels at a speed of 80 km to 90 km / h, the steering wheel vibrate, and the speed exceeds 90 km and then returns to normal.
剖析处理：呈现这种状况多数是因为轮胎变形或车辆传动系统引起的，须查看前轮各定位角和前束是否符合要求，如失准应调整；架起前桥试转车轮，查看车轮静平衡状况及轮胎是否变形过大，如变形应替换。
analysis: most of this is due to the deformation of the tire or the drive system of the vehicle. it is necessary to see whether the front wheel alignment angle and the front bundle conform to the requirements, such as the misalignment, the front axle test wheel, the static balance of the wheel and the excessive deformation of the tire, if the deformation should be replaced.
毛病体现：行进在平整路面上车辆正常，但遇到坑洼的路面时，方向盘会呈现颤动。
the trouble is that the moving vehicle on the pavement is normal, but the steering wheel will vibrate when the road surface is rough.
剖析处理：这是因为轿车在行进时，因拉杆球头磨损松旷或接头处胶套掉落，还有轮胎因磨损变得不规则，应送专业维修点查看，替换损坏部件。
analysis and processing: this is because the car is moving in, because the rod ball is worn loose or the rubber sleeve falls off the joint, and the tire becomes irregular because of wear and tear. it should be sent to the professional maintenance point to replace the damaged parts.
毛病体现：车辆时速在30至40公里时，车身有晃动感，如坐船的感觉。
the trouble is: when the vehicle is running at 30 to 40 kilometers per hour, the body feels like a ship.
剖析处理：呈现这种状况多数是因为轮胎在日常使用时因为擦、撞或是老旧等原因引起变形所导致的，替换轮胎即可。
analysis and treatment: most of this is because the tire can be replaced by the tire in daily use because of the deformation caused by rubbing, collision, or old age.
毛病体现：高速行进时俄然踩刹车呈现方向盘颤动。
the trouble is: when the road is moving at high speed, the brake is on the way and the steering wheel vibrate.
剖析处理：刹车用力过猛、过频可能会导致刹车盘、刹车片过热，遇冷变形，引起方向盘颤动。一般在替换刹车盘、刹车片后，症状即可得到解决。
analysis and treatment: brake overexertion and overfrequency may cause brake disc and brake block to overheat, cold deformation, causing the steering wheel to vibrate. in general, after replacing the brake disc and brake pad, symptoms can be resolved.
毛病体现：高速行进中呈现车身共振。
the problem is: body resonance occurs at high speed.
剖析处理：常见原因是因为传动轴歪曲变形或传动轴十字接松旷、缺油锈死。因为以上部件都在车身下方，保养时***易疏忽，因此，在每一次做保养时，尽量让工作人员在可上油的部位打上黄油
analysis and treatment: the common cause is the distortion of the transmission shaft or the looseness of the transmission shaft and the lack of oil and rust. because all of the above parts are under the body, they are most careless in maintenance, so try to allow the staff to butter the oil on every maintenance.
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济南弘玺源商贸有限公司
韩先生
13173056680
山东 济南 历城区