Does your car make some kind of sound, when you are taking a turn at low speed with full lock on. That is possibly your CV joints. CV is an abbreviated form of Constant Velocity, and the joint ensures that the wheels are turning at a constant velocity, irrespective of the up and down movement in the suspension of the car.
Do You Need To Replace Them?
Irrespective of whether your Porsche vehicle is rear, front or all-wheel drive, CV joints are found on both ends of the shafts. The outer joints allow movement between the wheels and the shaft, while the inner CV joints allow movement between shaft and transmission. In rare cases, the CV joints on the rear wheel fail. The inner CV joint doesn’t move as much as the outer one, so we’ll focus on the outer joints.
CV Joint Noise
No special training is required to detect this clicking sound that comes from a dented CV joint. Since the degradation is slow, it may take some time before it is noticed by a driver. Park your car evenly in a smooth space, followed by turning the wheel completely in one direction. Gently accelerate the car, while holding the wheel steady. Keep repeating it in opposite direction. In case there is any worn and torn, you will hear a clicking sound. In such a case, you may need to replace the joints, before there is complete disintegration. With the worsening of the component condition, the noise gets louder.
Replacement And Safety
There are plenty of components that need to be removed, when considering to replace a CV joint. Make sure you have all the required tools prior to starting work. Take out the keys of the ignition, and make sure that the battery is disconnected to avoid any accidental chance of car being started. Dismantling of the lower ball joint is done after the washer and the nut is removed. If you are replacing outer CV joint, make sure the inner CV joint is not removed. The gearbox oil can spill out in this case.
Replacement of just the CV joint may not be possible in some models. The entire shaft with both outer and inner CV joints may be needed, adding to labour and expense. You need to prise the inner joint out of the transmission, keep an eye on whether the oil is spilling out in the process. Once the new CV joint is installed, it’s important to top up the gearbox oil!
What Is The Cost Of Replacement?
CV joints come with a price tag that varies depending on the model in question. Labour charge shouldn’t be much of a concern, but in case some unavoidable issues come up, you need to bear the expense. The main reason behind the failure of CV joints is the damage done to the rubber boots surrounding them. These can keep dirt and moisture out of the joint, and required grease in place. It can tear apart with time and gradually lead to failure.