Because the transmission device is often affected by the car driving on the complex road, so that the transmission shaft in its Angle and length of constant change in the case of transmission torque, so often appear dynamic imbalance of the transmission shaft, universal joint and middle support loose, sound and other faults.

Fault a: the car started when the crash sound, the drive has always been abnormal sound. Phenomenon for the car in the beginning, there is a crash sound; In heavy driving, when the speed changes or high speed and low speed driving, there is also a crash sound, the whole driving process, almost continuous sound.

Fault 2: no noise at start, no noise during driving. The phenomenon is that although the car is no different noise when starting, but when accelerating the abnormal sound appears, the noise is obvious when sliding out of gear.

Fault three: driving a cyclical sound, the higher the speed of the noise is greater. The phenomenon is that when the technology of universal joint and sliding fork is in good condition, the car will make periodic noise. The higher the speed, the louder the noise, even with the body vibration, steering wheel grip hands feel numb.

Failure 4: under different working conditions, the drive shaft will make a sound of "kung" or "kung". Phenomenon is in the car start and suddenly change the speed of the car, the transmission device issued a "utter" sound; "Quack, quack," went the car as it went slowly.

Malfunction 5: continuous "purr" sound appears in operation. Phenomenon for the car running in a continuous "purr" sound, the higher the speed of the noise.

Fault 6: abnormal sound during driving, accompanied by body vibration. Phenomenon is over the medium speed will appear abnormal sound, the higher the speed the louder the noise, reached a certain speed when the body shaking. At this time, if the taxi immediately out of gear, the vibration is more intense, when falling to the middle speed, the vibration is slightly reduced, but the abnormal sound of the transmission shaft still exists.