The common faults of automobile transmission shafts are the damage, wear, deformation and loss of dynamic balance of the transmission shaft, which cause abnormal noise and vibration in the driving of the automobile. The common faults of these automobile transmission shafts will cause damage to related components when they are serious. .When the car is running, it makes a "Gerdon" sound when it starts or accelerates rapidly, and it clearly shows the feeling of loose parts. If it is not the loosening of the drive axle transmission gear, it is obviously that the transmission shaft is loose.The loose parts are nothing more than universal joint cross bearings or steel bowl and flange fork, the spline shaft and spline sleeve of the telescopic sleeve.

    Generally speaking, the cross shaft diameter and the bearing openness should not exceed 0.13mm, and the meshing gap between the telescopic spline shaft and the spline sleeve should not exceed 0.3mm.Exceeding the service limit should be repaired or replaced.If the chassis makes a "humming" sound while the car is running, and the higher the running speed, the louder the sound.The common faults of this automobile transmission shaft are generally caused by the wear and tear of the universal joint cross shaft and the bearing, the wear of the intermediate bearing of the transmission shaft, the damage of the intermediate rubber support or the loose hanger, or the fixed position of the hanger.

     When a 6×4 car is under heavy load, especially when driving bumps, it occasionally makes a knocking sound. Pay attention to check whether the balance shaft of the middle and rear axle is displaced and interferes with the transmission shaft.If the noise increases with the increase of the vehicle speed during the operation of the car, and is accompanied by jitter, this common fault of the car transmission shaft is generally caused by the loss of balance of the transmission shaft.This vibration is most noticeable in the cab.The unbalance of the dynamic balance of the drive shaft should be less than 100g.cm.

    A serious failure of the dynamic balance of the drive shaft will cause damage to related components.The most common common failures of automobile transmission shafts are the cracks of the clutch shell and the fatigue damage of the middle rubber support.The installation of the intermediate hanger of the transmission shaft is very important in maintenance.If the hanger is installed in an improper position, it will increase the running resistance and noise of the drive shaft, resulting in early damage to the bearing.The common failures of this type of automobile transmission shaft have a very high probability, so the way to solve the common failures of the automobile transmission shaft is: when reinstalling the hanger, first do not tighten the fixing bolts of the hanger, and use the jack to support the car drive wheel off the ground and hang it. At low gear, slowly rotate the drive shaft to make the drive shaft and the hanger automatically align, and then tighten the hanger fixing bolts.