Chrysler 5143570AA BALLJOINT-Lower Control Arm

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Inspect the control arm balljoints for looseness anytime either of them is separated from the steering knuckle. See if you can turn the ballstud in its socket with your fingers. If the balljoint is loose, or if the ballstud can be turned, replace the balljoint. You can also check the balljoints with the suspension assembled. To check the upper balljoint, loosen the front wheel lug nuts, raise the front of the vehicle and support it securely on jackstands, then remove the wheel. Raise the lower control arm with a floor jack to simulate normal ride height. Using a large pry bar inserted between the upper control arm and the steering knuckle, pry upwards on the upper control arm. The manufacturer specifies up to 0.020-inch movement is allowed; a dial indicator can be used to check for play. If you are unable to accurately measure balljoint play, have the balljoint checked at an automotive repair shop. If replacement is indicated, replace the upper control arm. For the lower balljoint, raise the vehicle and support it securely on jackstands. Place a floor jack under the lower control arm, near the outer end, and raise it until the upper control arm lifts off its rebound bumper. Now, insert the prybar between the top of the balljoint and the steering knuckle and pry down to check for wear. The manufacturer specifies up to 0.020-inch movement is allowed; a dial indicator can be used to check for play. If you are unable to accurately measure balljoint play, have the balljoint checked at an automotive repair shop. If replacement is indicated, remove the lower control arm. The balljoint is press fit in the lower control arm, which necessitates the use of a special press tool and receiver cup to remove and install the balljoint. Equipment rental yards and some auto parts stores have these tools available for rent. If you don't have access to this tool, take the vehicle (or the lower control arm) to an automotive machine shop or other qualified repair facility to have the balljoint replaced. Note: Some balljoint replacement tools are similar to a big, heavy-duty C-clamp. With this type of tool, it is only necessary to separate the balljoint from the steering knuckle.