What Is A CV Shaft?

Constantly velocity or CV shafts are often used in front wheel drive vehicles these days. Many all-wheel drive and rear wheel drive vehicles also rely on this component.

What Does A CV Shaft Do?

CV shafts are designed to transmit power evenly through a variety of angles, using minimum friction and internal play. These shafts feature two CV joints on either end, allowing the vehicle to drive forward while providing suspension to manage turns and bumps in the road.

Two wheel drive vehicles will have two CV shafts, while all-wheel drive vehicles may have up to four CV shafts. The CV joints are filled with molybdenum disulfide grease, typically colored either brownish gray or dark green.

A rubber or neoprene flexible boot is in place to keep all the grease inside the joint. This is also needed to keep all the moving parts submerged.

Failing CV Shaft Symptoms

The boot is regarded as the weak point of CV shafts. Years of driving can ultimately weaken the boots as time goes on. A torn CV boot will allow the grease to leave the joint altogether. Water, dirt, and other potential contaminants may be able to enter the boot.

When contaminants fill the boot, you may notice a consistent clicking noise when turning or accelerating slowly. The recommendation is to change the CV shafts whenever the boot tears.

Conclusion

If you suspect any issues with your CV shafts, it’s best to take your vehicle in to the auto care professionals at Automatic Transmission Exchange. The mechanics will look for any tears in the boot and to see if there is any slinging grease. Always make sure these issues are diagnosed by the professionals!

Transmission Service, Repair, & Replacement Services in Phoenix, AZ

We offer a full range of auto transmission repair and replacement services from automatic transmission to manual transmission to the entire Phoenix Metro area.

*Disclaimer – This is not an actual quote. Your transmission repair or replacement cost could be different than the prices you see on this guide. The only way to get an actual estimate is by searching for transmission repair and replacement shops near you. Contact Automatic Transmission Exchange if you are in the Phoenix area and need transmission repair or replacement.