Analysis of common faults of transmission shaft (1)
发布时间：2017.04.28 新闻来源：邢台远拓汽车零部件制造有限公司
Fault one, when the car starts to have the impact sound, always has the unusual sound in the movement.
Phenomenon: when the car starts, there is a crash; when driving heavy, when the speed change or high-speed gear travel at low speed, there is a crash sound, the whole process is almost noisy.
Reason
There is looseness at the joint of a flange of a drive shaft.
Universal joint journal and bearing wear loose.
The middle bearing support bolt is loose.
The inner ring of the intermediate bearing is loose or shock absorbing and rubber is damaged.
The bolts on the E and rear leaf springs are loose.
Diagnosis
When the car suddenly changes speed, there is always a metal percussion, most of the individual edge or universal joint bearings loose.
When the brake is slowing down, the heavy metal impact is found on the drive shaft, and it should be checked whether the riding bolts on the leaf spring are loose or not.
In the starting or running, there is always obvious abnormal sound and vibration, but generally it is the middle bearing, the support bolt of the bracket is seriously loose or the middle bearing is damaged.
When starting and changing the speed of the car, the impact is obvious. When the car is running at low speed, the abnormal sound is obvious when compared with the high speed. It shows that the inner race of the middle bearing is loose.
After parking, visually inspect and shake each part of the drive shaft to verify the above diagnosis.
