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Damage, wear, deformation and loss of dynamic balance of the drive shaft parts will cause abnormal sound and vibration in the running of the car. In the running of the car, when starting or accelerating rapidly, it gives out the sound of "gruden", and obviously shows the feeling of loose and relaxed parts. If it is not loose and relaxed parts of drive axle transmission gear, it is obviously loose and relaxed parts of drive shaft. Loose kuang parts are nothing more than universal joint cross bearing or steel bowl and flange fork, telescopic sleeve spline shaft and spline sleeve. In general, the shaft diameter of the cross shaft and the bearing length shall not exceed 0.13mm, and the meshing clearance between the telescopic spline shaft and the spline sleeve shall not be greater than 0.3mm. Exceeding the limit of use should be repaired or replaced.

If the chassis of a car is humming, the higher the speed, the louder the sound. This is generally due to the universal joint cross shaft and bearing wear loose and relaxed, transmission shaft intermediate bearing wear, intermediate rubber bearing damage or hanger loose, or due to hanger fixed position is not caused by.

6 4 when the car is under heavy load, especially in the bumpy driving occasionally knock sound, attention should be paid to check whether the balance shaft in the middle and rear axle is out of position and interferes with the transmission shaft. In the running of a car, if the noise increases with the increase of the speed, and accompanied by jitter, it is generally caused by the loss of balance of the transmission shaft. This vibration is most apparent in the cockpit. The unbalance of the driving shaft should be less than 100g.cm.

The failure of dynamic balance of the transmission shaft will seriously damage the relevant parts. The most common are the crack in the clutch housing and the fatigue damage of the intermediate rubber support.

The installation of the intermediate hanger of the transmission shaft is very important in maintenance. If the hanger is improperly installed, it will increase the running resistance and noise of the drive shaft, resulting in early bearing damage. When reinstalling the hanger, first, do not tighten the hanger fixing bolts, disintegrate the ground with the car driving wheel jack, hang the low-speed gear, slowly rotate the drive shaft to make the drive shaft and the hanger automatically align, and then tighten the hanger fixing bolts.

The above contents are provided by xingtai yuantuo auto parts manufacturing co., LTD.

Company website: http://m.beiancar.com.cn