Ford AG1Z-5310-B Spring - Front

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

Ensure the steering is unlocked. Loosen the strut upper mounting nuts but do not remove them. Loosen the wheel lug nuts, raise the vehicle and support it securely on jackstands, then remove the wheel. Have an assistant depress the brake pedal, then remove the driveaxle/hub nut. Remove the brake disc, separate the tie-rod end from the steering knuckle, and detach the stabilizer bar link from the strut. Detach the wheel speed sensor harness from the strut, remove the bolt, and pull the wheel speed sensor from the steering knuckle. Separate the control arm balljoint from the steering knuckle. Using a front wheel hub remover, press the driveaxle from the hub splines. Remove the upper mounting nuts and remove the strut and steering knuckle as an assembly.

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.