Some people wonder how to replace ball joints on their own. Replacing a ball joint requires some specialized knowledge and tools. You will need an axle wrench, torque wrench, and ball joint press to do the job. It requires removing the car's wheel, axle nut, and caliper. It would be best if you then disconnected the control arm and steering knuckle. Finally, remove the old ball joint, and then complete the steps in reverse order to reassemble things. You will also need to perform a wheel alignment after the new ball joint has been installed.