In a car, the gas strut for your truck lid is usually a ball/socket connection and is easy to see/get to. Others in a car are the wiper motor/linkage is usually a ball/socket joint. In the human body, the femur / Hip joint or the shoulder joint
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Bad ball joint
The hip joint is a ball and socket joint.
it allows the wheels to swivel so the driver can steer
The ball joint in a vehicle is used to pivot between the wheel and the suspension. There are usually and upper ball joint and a lower ball joint.
To change the lower ball joint on a 2001 Lincoln Town Car, first, lift the vehicle and securely support it on jack stands. Remove the wheel and brake components, then disconnect the lower control arm from the steering knuckle. Press out the old ball joint using a ball joint separator tool, clean the area, and install the new ball joint by pressing it into the control arm. Reassemble the components in reverse order, making sure to properly torque all fasteners.
There all kinds of tools for Ball Joints; OTC Remover, Ball Joint OTC Ball Joint Separator KD Tools Ball Joint Separator OTC Ball Joint Service Set KD Tools Universal Ball Joint Separator OTC Wrench, Ball Joint Spanner KD Tools Ball Joint/U-Joint/Brake Anchor Pin Press OTC Master Ball Joint Adapter Set KD Tools Ball Joint/U-Joint/Brake Anchor Pin Press Set KD Tools Ford Ball Joint Cam Tool Sears.com
The joint in your shoulder is a Ball & Socket Joint.
replace it. there is no repair
Have the vehicle checkout, a ball joint should not make the car shake ( There are other components that would of been removed to change the ball joint. There is obviously something lose or installed incorrectly. Check the torque of the wheel nuts as a lose wheel may be the culprit. There is a possibility of steering or suspension failure, DO NOT drive the vehicle until it is repaired.
Jack up the car. Put the car on jack stands. Remove the tire Ball joint located under the axle, attached to the lower control arm Use pliers or grips, rip out cotter bin unbolt the nut use a ball joint separator to pop out the ball joint use joint separator to pop in a new joint reassemble nut and New Cotter Pin put tire back on Hope this helps.