The transmission shaft is the main part of the car. The transmission shaft is located at the bottom of the car and is often splashed by the sand rolled up by the tire, and its material is also rubber, so it will harden over time. If it is stretched violently (that is, when the steering wheel hits one side to the end and accelerates rapidly), it is likely to cause cracking (or it will be broken by foreign matters flying under the chassis), Therefore, the high-temperature grease of the universal joint ball bearing inside will splash out from the crack due to thermal expansion and rotating centrifugal force.

 

Once the universal joint of the transmission shaft is not lubricated enough, its ball bearing will wear out immediately, so it will make a continuous noise when turning; What's more, it will make a sound when driving in a straight line.

 

Sharp turns are a situation that friends who love to drive fast will encounter. When making a sharp turn, it is natural that the steering wheel will hit the bottom to one side, or the turning angle is very large. At this time, the torque borne by the transmission shaft will also increase. When the burden of parts is large, it is naturally easy to accelerate aging or wear, and it is inevitable to shorten the service life. Here, let's study what happens to the transmission shaft of the front wheel when turning sharply.

 

The shape of the transmission shaft dust boot is like a wrinkled part of the neck of the "straw". When we generally pull out the neck of the straw, if we pull it too hard or pull it out too quickly, it may cause the fracture of the wrinkled part. Therefore, when we suck the beverage, the beverage will leak out and cannot be sucked out; The dust boot of the drive shaft is the same.

 

There is a universal mechanism at both ends of the transmission shaft, one end is connected to the gearbox and the other end is connected to the front wheel (steering wheel). The inside of the universal mechanism is filled with high temperature resistant lubricating oil, and the outside is covered and sealed with a rubber dust cover. At the end connecting the wheels, it is the part of the transmission shaft that is prone to failure. Generally speaking, it is the rupture of its dust boot that leads to oil leakage, resulting in insufficient lubrication of the universal mechanism.

 

The reason for the rupture of the transmission shaft dust cover is that it is often caused by turning the steering wheel to the left and right, and turning at the same time. Therefore, we remind the majority of motorists to develop good driving habits, which is a guarantee for their own health of their car.