Mercury XW1Z-3079-BA Arm Assembly - Front Suspension

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Remove the wheel lug nuts, raise the vehicle, and remove the wheel. Remove the nut, washer, and bushing from the shock absorber. Use a floor jack under the lower control arm and loosen the stud in the steering knuckle with a hammer. If needed, use a balljoint stud separator. Remove the nut from the upper balljoint stud and the upper control arm pivot shaft bolts. Remove the upper control arm assembly. Inspect the control arm bushings for damage. If damaged, replace at an automotive shop. Reinstall the upper control arm pivot shaft and the two attaching bolts. Insert the upper balljoint stud into the steering knuckle and install the nut or pinch bolt. On pre-1992 models, align the cotter pin hole with the nut slots and install a new cotter pin. Reinstall the wheel and tighten the lug nuts. Lower the vehicle and have the alignment adjusted at a shop.

The lower control arm pivot bolts and nuts are installed but not fully tightened.

Start by loosening the wheel lug nuts. Raise the vehicle and securely support it with jackstands. Remove the wheel.

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.

Begin by loosening the wheel lug nuts. Raise the front of the vehicle and securely support it with jackstands. Remove the front wheel.

Position a floor jack under the lower control arm. Remove the pinch bolt and nut retaining the upper balljoint stud to the steering knuckle. Use a prybar to spread the slot in the knuckle and separate the balljoint stud. Remove the upper control arm retaining bolts and the upper control arm assembly.