What Is A CV Joint?

Generally, we are taking our cars for granted, unless something wrong happened. Then we need to wait for people who professional with car service to explain the problem to us and solved it for us.

In this case, it is important to you to know the most important parts of your car, such as CV joint. In this article, we would like to introduce what is CV joint; it includes what it is, how it works, and the symptoms of it fails.

What Is A CV Joint?

First of all, people need to understand that CV joint is a constant velocity joint. It connects two parts of your car’s driveshafts, and it is an important part to joining your driveshafts to the transmission and the wheels.

The role of inner CV joint is connecting the driveshafts to the car’s transmission and the role of outer CV joint is connect the driveshafts to the car’s wheels. 

All cars have CV joint, whether it is 2WD or 4WD.

There are two common types of CV joint, which a tripod type and a ball type. Tripod types are usually used on the inside, so it be called inner CV joints. Ball types are used on the outside of the driveshafts, so it be called outer CV joints

Because of its design, CV joint is able to suffer large changes in angle during the same time of your car’s front wheels turning. They typically allow 45-48 degrees of articulation, although some of them are able to allow 54 degrees. 


How Does It Work?

CV joints are necessary for transferring the torque from the transmission to the car’s drive wheels in constant speed. At the same time of they do this, they also need to make allowances for the increase or decrease the movement of the suspension, and they need to articulate over uneven road surfaces. 

Also, CV joint required to allow the transmission of power through a wide range of angles, and it ensures minimum friction and internal play at the same time. The inside of a CV joint is always filled with specialized grease.

CV boot is in the upper position of CV joint. This is a rubber flexible protection in the purpose to maintain the grease inside the CV joint and the coating of moving parts. It also can prevent dirt and debris go through the CV joint

However, the boot is the weakest part of the CV joint. Following years of moving, the boot would begin to weaken even break if turning and change the movement of the suspension.

CV Joint Problems

As most people know, the most serious problem of CV joints is the failure of the boot. Once this has failed, it no longer keeps the grease on the joint and the moving parts, this situation would cause it no longer to be coated in grease for the purpose of protection and lubrication. 

The lack of lubrication will cause contaminants to accumulate inside the joint and lead to friction. This will accelerate the wear of the joint’s internal parts.

With the failing of boot, there is nothing to prevent road dirt and debris to go through the CV joint, it will cause further degradation and damage. On the other hand, water is also able to penetrate the CV joint; in this time, the joint is would be rusted without the protective coating of grease. 

Signs Of Damaged CV Joint

When a CV joint has failed you may hear a loud clicking sound if you slowly accelerating or turning your car. A visual inspection will reflect the physical broken of the CV boot like crack or tear. 

Another obvious sign of a damaged CV joint is the presence of the grease that should be surrounded by the boot of joint, or other internal components of the engine. The reason of that is the tear in the boot cause the CV joint to throw out the lubricating grease. 

Failure of the inner CV joint is not always happened, but people still need to concern about that. Signs of this problem includes vibration and shaking on acceleration. The failure of inner CV joint may cause a clunking sensation if you are shifting gear from drive to reverse or decelerating.


About Us

Long Wind Group was established in 2017, formerly known as Yuhuan Xintai Import & Export Co., Ltd. Through around 20 years of development and improvement, we have won excellent reputation and rich experience. For products, we focus on chassis parts and engine parts, including shock absorber, clutch disc, clutch cover, CV joint, B.M.C., C.M.C., C.O.C., suspension, water pump, bush and so on.


Our Advantage

Our LWT products has passed 100% professional test, it has repeatedly proved in high quality. We offer 12 months or 40000 kilometers warranty. Further, we deal with most of common models you can see in the market. Welcome to contact us.

Post time: Nov-22-2022