Mercury F6AZ-3084-BA Arm Assembly - Front Suspension

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The first step is to raise the vehicle on jackstands.

To remove the upper balljoint stud on 1991 and earlier models, you need to remove the cotter pin and then the nut from the upper balljoint stud.

Remove the cotter pin from the upper balljoint stud and loosen the stud nut slightly. Place a floor jack under the lower control arm and raise it slightly. Tap the steering knuckle near the upper balljoint stud with a hammer to loosen it. Use a balljoint stud separator if needed (note that this may damage the balljoint boot). Remove the nut from the upper balljoint stud and the upper control arm pivot shaft attaching bolts. Remove the upper control arm and pivot shaft as an assembly.

Inspect the bushings for damage. If needed, have new bushings installed at an automotive machine shop.

Raise the lower control arm to simulate normal ride height. Tighten the pivot bolt nuts. Install the wheel. Remove the jackstands. Lower the vehicle. Tighten the wheel lug nuts to the recommended torque.

Position the upper control arm pivot shaft on the frame. Install the attaching bolts and washers. Insert the upper balljoint stud into the steering knuckle and secure it with the nut or pinch bolt.