What is a CV joint?
Constant-velocity joints, also known as CV joints form part of the car steering wheel set-up. CV joints work on allowing the tires to turn all directions. It is rounded in shape and filled with grease that is protected by a CV boot. It is differentiated into two joints which is the inner and outer joint.
How does a CV Joint work?
Constant-velocity joints let the drive shaft transfer power to a shifting angle. CV joints are in control of the smooth transfer of engine power, irrespective of the turning angle of the steering wheel.
What are the symptoms of a bad CV joint?
- Loud clicking sounds when turning
When the car is making loud clicking sounds when turning, it is highly possible that your CV joint has gone bad. CV shafts get damaged. The joints will detach and click when turning. On faster turns, it may make loud sounds.
- Grease on edge of tire
Another symptom that may be a problem on CV joints shaft is grease on the inside edge of the tire. Also, besides the underpart of the vehicle. This is usually caused by a torn boot leaking grease, which is tossed around while the axle turns. A leaky boot will eventually lead to CV joint failure, as dirt and debris will get into the boot and damage the joint.
- Excessive vibration while driving
Another symptom of a bad CV axle is excessive vibrations from the axle while driving. If a CV joint or axle shaft is damaged in any way that affects its balance while rotating, it will cause the shaft to vibrate excessively while operating the vehicle. The vibrations may oscillate, or become more pronounced as vehicle speed increases. Excessive vibration from failing CV shafts can interfere with handling and ride characteristics, and the overall safety and comfort of the vehicle. Usually, the CV axle will need to be replaced if it is damaged enough to cause vibrations.
How to test CV joints?
It is crucial to examine the rubber boots on the axle shaft next to the wheel. Usually, one of the signs of it being damaged is having grease-covered on it.
Smoothly accelerate and decelerate quickly. While doing this you need to mind if there is any series of movements or trembling. Turn the steering wheel to one side and accelerate slowly. Do it the same thing with another direction. Listen for any loud clicking sound, if there is then it indicates a bad joint.