The steering wheel shaking of concrete mixer is one of the common problems of mixer truck in our daily driving process, especially when the mixing truck runs between 50000 km and 70000 km. Concrete mixer steering wheel shaking and body resonance will lead to unsafe driving. In this concrete mixer manufacturers for us to analyze several common cases of steering wheel shaking and provide solutions, hoping to help you.

1.混凝土搅拌机行驶时速在8090之间时，出现方向盘抖动现象，时速超过90则恢复正常。

1. When the speed of the concrete mixer is between 80 km / h and 90 km / h, the steering wheel shakes. If the speed exceeds 90 km / h, it will return to normal.

分析处理：出现这种情况多数是由于搅拌车轮胎变形或搅拌车传动系统引起的，须检查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，检查搅拌车车轮静平衡情况及轮胎是否变形过大，如变形应更换。

Analysis and treatment: most of the cases are caused by the deformation of the tire or the transmission system of the mixer. It is necessary to check whether the alignment angle and toe in of the front wheel meet the requirements. If it is out of alignment, it should be adjusted. Set up the front axle to test the wheel, check the static balance of the mixer wheel and whether the tire is too deformed. If it is deformed, it should be replaced.

2.行驶在平坦路面上搅拌车正常，但遇到坑洼的路面时，方向盘会出现抖动。

2. The mixer is normal when driving on a flat road, but the steering wheel will shake when encountering potholes.

分析处理：这是由于混凝土搅拌机在行驶时，因拉杆球头磨损松旷或接头处胶套脱落，还有轮胎因磨损变得不规则，应送维修点检查，更换损坏部件。

Analysis and treatment: This is because the concrete mixer is running, because the pull rod ball head is worn and loose or the rubber sleeve at the joint falls off, and the tire becomes irregular due to wear, so it should be sent to the maintenance point for inspection and replacement of damaged parts.

3.故障表现：混凝土搅拌机时速在3040时，车身有晃动感，如坐船的感觉。

3. Fault performance: when the speed of concrete mixer is 30-40 km / h, the car body is shaking, such as feeling on a boat.

分析处理：出现这种情况多数是由于轮胎在日常使用时由于擦、撞或是老旧等原因引起变形所导致的，更换轮胎即可。

Analysis and treatment: this kind of situation is mostly due to the tire deformation caused by rubbing, bumping or aging in daily use, so replace the tire.

4.故障表现：高速行驶时突然踩刹车出现搅拌车方向盘抖动。

4. Fault performance: when driving at high speed, the steering wheel of the mixer shakes when suddenly stepping on the brake.

分析处理：刹车用力过猛、过频可能会导致搅拌车刹车盘、刹车片过热，遇冷变形，引起方向盘抖动。一般在更换刹车盘、刹车片后，症状即可得到。

Analysis and treatment: excessive braking force and frequency may lead to overheating of brake disc and brake pad of mixer truck, and deformation when cold, causing steering wheel shaking. Generally, the symptoms can be solved after replacing the brake disc and brake pad.

5.故障表现：混凝土搅拌机高速行驶中出现车身共振。

5. Fault performance: the body resonance occurs when the concrete mixer is running at high speed.

分析处理：常见原因是因为混凝土搅拌机传动轴扭曲变形或传动轴十字接松旷、缺油锈死。由于以上部件都在车身下方，保养时易忽略，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 reason is that the drive shaft of the concrete mixer is distorted or the cross joint of the drive shaft is loose and rusty due to lack of oil. As the above parts are under the body, it is easy to ignore during maintenance. Therefore, during each maintenance, the staff should try to put grease on the parts that can be oiled.