Lincoln F7AZ-18125-JA Kit - Shock Absorber

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If the vehicle has an air suspension, turn the air suspension switch to On, start the engine, and let the compressor inflate the air suspension springs before driving.

Check the steering gear mount bolt tightness.

The two bolts that attach the lower end of the shock absorber to the lower control arm need to be removed.

Before installing a new hydraulic shock absorber, expel all air by extending and compressing it multiple times. Place the inner washer and rubber insulator on the shock piston rod and insert the rod through the upper mounting hole in the frame. Install the outer insulator, washer, and a new stud retaining nut on the upper side of the frame. On specific models, install the inner washer and rubber insulator on the shock rod and insert the rod through the upper mounting hole. Push up on the shock absorber to align the lower shock eye in the mounting bracket and install the bolt and nut. Then install the upper mounting rubber insulator and the dished washer on the shock rod and tighten the nut. Extend the shock absorber, insert the lower shock stud through the hole in the bracket on the axle tube, and install a new self-locking retaining nut. Attach the air line(s), if equipped.

Inspect the shock absorber for leaking fluid, dents, cracks, and other damage. Examine the coil spring for chips and cracks that could lead to premature failure. Also, inspect the spring seats for hardness and general deterioration.

Visually inspect the steering system components for damage and distortion. Look for leaks and damaged seals, boots, and fittings.

The floor jack should be placed under the lower control arm and raised slightly.

If the vehicle continues to move up and down or fails to return to its original position, a worn or weak shock absorber is likely the reason.

Note the order of installation for any bushings and grommets above and below the upper control arm. Inspect these parts for cracks, tears, and deterioration, replacing them as necessary.

If the vehicle has an air suspension, turn the air suspension switch to On, start the engine, and let the compressor inflate the air suspension springs before driving.