Mercury 6W1Z-3084-B Arm Assembly - Front Suspension

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One way to take off the upper control arm is to loosen the hubcap nuts, lift the vehicle, and detach the wheel. For models 1988-1991, take out the cotter pin and release the stud nut. Use a jack to lift slightly the lower control arm and strike on the steering knuckle near the ball joint stud to loosen it. In case of need, use a ball joint stud separator. Remove the nut and pivot shaft attaching bolts then remove the upper control arm. For models 1992-2002, raise the lower control arm with a jack, get rid of the pinch bolt and nut, and disconnect ball joint stud. Take off the upper control arm retaining bolts and assembly. On models for 2003 and up, first, remove the shock absorber/coil spring assembly together with harness retainers then remove the upper control arm mounting bolts. When installing put the upper control arm pivot shaft in its position on frame, put the ball joint stud into the steering knuckle, and secure it there.

To remove the lower control arm, loosen lug nuts, raise vehicle, support with jackstands, remove wheel. Remove shock absorber or shock absorber/coil spring assembly. Disconnect stabilizer bar link (1988-1991 models). Remove coil spring (2002 and earlier models). Remove cotter pin and loosen castle nut on balljoint stud. Tap steering knuckle to release pressure and loosen stud. Remove balljoint stud nut and lower control arm by removing mounting bolts. Inspect bushings for damage; replace if necessary. Install lower control arm with mounting bolts (not fully tightened), use spring compressor (2002 and earlier models) and seat spring properly. Insert balljoint stud into steering knuckle, tighten castle nut, and install new cotter pin. Install shock absorber/coil spring assembly (2003 and later models). Attach stabilizer bar (1988-1991 models). Raise control arm to normal ride height, tighten pivot bolt nuts, install wheel, remove jackstands, lower vehicle, and tighten lug nuts.

Remove the cotter pin from the balljoint stud. Loosen the castle nut on the stud. Use sharp raps on the steering knuckle near the stud to release pressure and loosen the stud. Remove the balljoint stud nut. Lower the control arm by removing its mounting bolts.

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