The common faults of automobile transmission shaft are the damage, wear, deformation and loss of dynamic balance of the transmission shaft, which cause abnormal noise and vibration in driving. When these faults are serious, they will lead to the damage of related components.
When the car is driving, it makes a "geden" sound when starting or accelerating rapidly, and obviously shows the feeling of loose parts. If it is not the loose part of the drive axle transmission gear, it is obviously the loose part of the transmission shaft, which can judge that the transmission shaft is broken. Loose parts are universal joint cross bearing or steel bowl and flange fork, spline shaft and spline sleeve of telescopic sleeve.
Generally speaking, the cross shaft diameter and bearing clearance should not exceed 0.13M, and the meshing clearance between telescopic spline shaft and spline sleeve should not exceed 0.3Tm. If the service limit is exceeded, the transmission shaft shall be repaired or replaced.