Ford F43Z-18125-A Shock Absorber Assembly

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The balljoints may be worn.

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

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

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.