Lincoln F43Z-18125-A Shock Absorber Assembly

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After reconnecting the strut assembly and steering knuckle, the upper mount to strut assembly retaining nut should be tightened to the specified torque.

The strut is separated from the steering knuckle by removing the strut to steering knuckle nuts and bolts.

Push down on each corner of the vehicle and observe its movement. Any continuous bouncing or failure to return to the original position may indicate worn or weak shock absorbers.

Remove the jackstands and lower the vehicle. Before driving a vehicle equipped with air suspension, turn on the air suspension switch, start the engine, and allow the compressor to inflate the air suspension springs.

The upper shock mount cannot rotate when the shock and the spring are assembled. Therefore, it is crucial to mark the position of the upper mount with chalk or paint to ensure proper alignment. If the upper mount is not in the correct position, the studs won't fit into the holes in the shock tower.

Remove the shock-to-lower control arm nut and bolt, then separate the shock absorber/coil spring assembly from the spindle.

Park the vehicle on level ground, turn off the engine, and set the parking brake. Push down at each corner of the vehicle and observe if it stops moving and returns to a level position within one or two bounces.

Removal starts by removing the shock absorber upper attaching nut, washer, and bushing to detach the upper end of the shock absorber. For upper balljoint replacement on 1992 and later models, it's crucial to mark the location of the alignment marks on the adjustment cams before removing the two retaining nuts.

Remove the stabilizer link upper mounting nut and separate the stabilizer link from the spindle.

The rear shock absorber ARC actuator can be removed from the shock by pinching the retainer tabs and lifting it off.

Check the rear drive axle constant velocity (CV) joint boots for damage or leaking grease while the vehicle is raised.

Locate the upper retaining nut for the shock absorber on top of the frame and remove the nut, washer, and insulator. Compress the shock absorber to clear the hole in the frame and remove the inner insulator and washer. On certain models, open the trunk, remove the side trim panel, and remove the upper mounting nut from the shock absorber rod. Remove the lower retaining nut or bolt and remove the shock absorber from the vehicle.

Remove the shock absorber/coil spring assembly from the vehicle. Check the shock absorber for leaking fluid, dents, cracks or other obvious damage. Check the coil spring for chips or cracks which could cause premature failure and inspect the spring seats for hardness or general deterioration. Complete shock absorber/coil spring assemblies are available on an exchange basis. This eliminates much time and work. So, before disassembling the shock absorber/coil spring assembly to replace individual components, check on the availability of parts and the price of a complete rebuilt unit. Mount the shock absorber/coil spring assembly in arise. Line the vise jaws with wood or rags to prevent damage to the unit and don't tighten the vise excessively. Install a spring compressor in accordance with the tool manufacturer's instructions. Compress the spring far enough to relieve all pressure from the spring seat. The upper shock mount cannot rotate when the shock and the spring are assembled so it is very important to mark the position of the upper mount to the coil spring with chalk or paint before disassembly. If the upper mount is not in the proper position, the studs won't fit into the holes in the shock tower. Place a box-end wrench on the damper rod nut, hold the damper rod with a wrench and remove the nut. Disassemble the shock absorber/coil spring assembly. Carefully lift the compressed spring from the assembly and set it in a safe place, such as a steel cabinet. Inspect the damper rod seal for leakage. Extend and retract the damper rod slowly, then quickly, through its full stroke. It should be smooth, quiet and offer resistance. If it's jerky, noisy or offers little or no resistance, replace the shock absorber. It's a sealed unit and can't be rebuilt. Reassembly is the reverse of disassembly. Be sure to use a new damper rod nut Tighten the damper rod nut to the torque. The mounting studs must be in a position that is slightly offset to the lower shock mounting bolt. Install the shock absorber/coil spring assembly.

The rear shock absorber ARC actuator can be removed from the shock by pinching the retainer tabs and lifting it off.

Locate the upper retaining nut on top of the frame, and if necessary, hold the piston rod with a wrench or locking pliers while loosening the nut. Remove the upper nut, washer, and insulator from the stud on the upper side of the frame.

If any free play is noted, check the steering gear mounts and the tie-rod ends for looseness. Verify the steering gear mount bolt tightness. If the tie-rods are loose, the ball joints may be worn.

The bushings and grommets should be inspected for cracks, tears, and deterioration.

A new hydraulic shock absorber should be installed after bleeding the air from it.

The balljoints may be worn.