Ford AG1Z-5310-B Spring - Front

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For 2012 and prior models, unlock steering and loosen strut upper mounting nuts in the engine compartment. Raise the vehicle, remove the wheel, depress brake pedal, and remove the driveaxle/hub nut. Remove brake disc, separate tie-rod end and stabilizer bar from knuckle. Detach sensor harness, press driveaxle from hub, and remove the strut assembly. Inspect shock and spring for damage. For installation, align knuckle onto strut, insert upper studs through body holes, and guide driveaxle into wheel hub. Reconnect control arm balljoint, sensor harness, stabilizer bar, and tie-rod end. Install brake discs, new hub nut, and wheel. Check front end alignment. For 2013 models onwards, mark strut stud in engine compartment and loosen mounting nuts. Raise the vehicle, remove wheel, and detach sensor harness. Support control arm with jack, unscrew nuts securing strut to knuckle, and remove strut assembly. Inspect as before. For installation, align strut into fender well, insert studs through body holes, use jack to position knuckle, reconnect wheel speed sensor harness, and install wheel. Tighten nuts to correct torque, lower vehicle, and check alignment.

If the front suspension shock absorber/coil springs show signs of wear such as leaking fluid, loss of damping capability, sagging or cracked coil springs, they should be disassembled and overhauled as needed. The shock absorbers cannot be serviced and should be replaced if faulty, while the springs and related components can be replaced individually. It is important to replace components on both sides of the vehicle simultaneously to maintain balanced characteristics. Once the assembly is removed from the vehicle, clean off any external dirt without damaging the protective coating on the spring. Install the coil spring compressor tools securely and compress the spring until all tension is relieved from the upper mount. Hold the shock absorber piston rod with a wrench and unscrew the nut, avoiding the use of an impact wrench to prevent damage. Remove the upper mount, spring, boot, bump stop, and lower spring seat. If a new spring is being installed, carefully release the original spring from the compressor. Examine all components for wear and damage, replacing as necessary. Check the shock for fluid leakage, pitting on the piston rod, and damage to the shock body. Test the shock's operation by moving the piston through full and short strokes, ensuring smooth and continuous resistance. Reassemble by installing the lower spring seat, bump stop, and dust boot onto the shock absorber. Then, install the spring and upper mount/upper seat, aligning the arrow or notch on the upper mount with the lower mount. With the spring compressed, install the rod nut and position the ends of the spring within 0.39-inch of the step on both mounts. Tighten the nut to the specified torque while maintaining the position at both ends. Release the tension on the spring and reinstall the spring assembly in the vehicle.

The coil spring removal and installation are part of the lower arm removal and installation procedure.