Ford E7TZ-18125-F Shock Absorber Assembly

To test the shock absorber's efficiency, hold it in a vertical position and completely extend and compress the piston rod several times to work out any trapped air bubbles. Mount the bottom end of the shock absorber in a soft-jawed vise and grasp the upper rod, extending and contracting it rapidly. The resistance should be smooth and uniform throughout the entire stroke in both directions, with greater resistance during the extension stroke. If there is erratic or notchy resistance or if the resistance is the same or less during the extension stroke, the shock absorbers should be replaced.

Hold it upright and extend it fully. Invert it and fully compress and extend it at least 3 times to bleed trapped air.

The purpose of the shock absorber is to limit the motion of the spring during compression and rebound cycles.

Start by blocking the front wheels and raising the rear of the vehicle. Securely support it on jack stands and use a floor jack near the shock absorber to support the axle. Remove the lower attaching nut and pull the shock absorber free from the mounting bracket. Then, remove the securing nut from the upper mounting stud and withdraw the shock absorber from the vehicle.