What happens when the ball joints of a car break?

The ball joints, part of the front suspension of many cars, support the weight of the vehicle and connect the tension bars, springs, shock absorbers and other parts of the suspension to the wheels. Over time, the components begin to wear out and become loose from driving many times over potholes and due to the breakage of other parts of the suspension connected to the ball joints. The car may show several signs that the ball joints have started to fail.

NOISE: The first sign that the ball joints of a vehicle have started to fail is a metallic pounding from the front. The sound is like someone hammering on a metal plate. This noise may increase over time and may or may not be heard all the time. In addition, it can increase when you make a turn, especially a closed one, and when passing over bumps and bumps


The ground The second signal of defective kneecaps is a loud squeak that sounds as if the vehicle is skimming the ground. This sound can come from both patella or from one side and can be accompanied by a pounding.


Of the wheels Use a jack to raise the front wheels of the car. Place one hand on the bottom of one wheel and the other on the top. Shake the wheel and try to hear a pounding. If you hear it, it means that the kneecap is beginning to fail. Physical inspection of the ball joints With the elevated vehicle, locate the kneecaps. They are composed of a rod with a ball at its end, which is inserted in a cylindrical housing, generally partially covered by a rubber bellows, designed to retain the grease lubricating the joint. Move the rubber bellows; if it moves freely together with the joint, then the kneecap no longer works. If the bellows is dry and hard and moves freely, but without the joint, then the bellows will no longer work.