Drive shaft is a rotating body with high speed and little support, so its dynamic balance is very important. The general drive shaft before leaving the factory must be into the action balance test, and the balance machine has been adjusted.

For front-engine and rear-wheel drive cars, it is the shaft that transfers the transmission's rotation to the main reducer. It can be several sections, which can be connected by universal joints.

The drive shaft is composed of shaft tube, telescopic sleeve and universal joint.

The telescopic sleeve can automatically adjust the change of distance between the transmission and the drive axle.

Universal joint is to ensure the change of the Angle between the two axes of the transmission output shaft and the input shaft of the drive axle, and realize the equiangular speed transmission of the two shafts.

Drive shaft maintenance

In order to ensure the normal operation of the drive shaft and prolong its service life, attention should be paid to:

1. Cars are forbidden to start in high gear.

2. Do not lift the clutch pedal sharply.

3. Overloading and speeding are strictly prohibited.

4. The working condition of the drive shaft should be checked frequently.

5. Should often check the transmission shaft hanger fastening situation, support rubber is damaged, the transmission shaft is loose and loose, transmission shaft deformation.

6. In order to ensure the dynamic balance of the drive shaft, we should always pay attention to whether the balance welding plate is unwelded.

The new drive shaft assembly is provided with a complete set. When loading the new drive shaft, attention should be paid to the assembly mark of the telescopic sleeve, and the flange fork should be guaranteed to be in a plane.

When repairing and disassembling the drive shaft, assembly marks should be printed on the telescopic sleeve and flange shaft to keep the original assembly relationship unchanged when reassembling.

7. Grease should often be added to the universal joint cross bearings. No. 3 lithium grease should be injected in summer and No. 2 lithium grease should be injected in winter.