Ford BT4Z-18124-C Shock Absorber Assembly - Front

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No, shock absorbers themselves cannot be serviced; they should be replaced if found faulty.

If the shock absorber was replaced on 2015 and later models, install the upper mounting bracket to the shock absorber and tighten the piston rod nut to the torque.

Replace the shock absorbers.

1. Loosen the wheel lug nuts. 2. Raise the vehicle and support it securely on jack stands. 3. Remove the wheel. 4. Unbolt the brake hose bracket from the shock absorber. 5. Remove the wheel speed sensor and detach the wiring harness by removing the clamp bracket bolt. 6. On 2015 and later models, remove the stabilizer bar link nut and disconnect the link from the strut. 7. Support the control arm with a floor jack. 8. Unscrew the nuts securing the strut to the steering knuckle. 9. Tap the bolts out with a hammer. 10. Use the floor jack to lower the knuckle to allow room to remove the shock absorber/coil spring assembly, being careful not to overextend the inner CV joint.

If signs of wear such as leaking fluid, loss of damping capability, or issues like sagging or cracked coil springs are observed in the front suspension shock absorber and coil springs, disassembly and necessary overhaul are recommended. The shock absorbers themselves cannot be serviced and should be replaced if found faulty, while the springs and related components can be individually replaced. To maintain balanced characteristics on both sides of the vehicle, it's advisable to replace components on both sides simultaneously. After removing the assembly from the vehicle, ensure it's free from external dirt without damaging the protective spring coating. Utilize coil spring compressor tools to fully engage and compress the spring until tension is relieved from the upper mount. Carefully hold the shock absorber piston rod with a wrench and unscrew the nut, avoiding the use of an impact wrench. Subsequently, remove the upper mount, spring, boot, bump stop, and lower spring seat. If a new spring is to be installed, release the original spring from the compressor; otherwise, it can remain in compression. Examine all components for wear or damage, replacing them as necessary. Check the shock for fluid leakage, inspect the piston rod for pitting, and assess the shock body for damage. Test the shock's operation by moving the piston through various strokes, ensuring smooth and continuous resistance; any signs of wear, damage, or uneven resistance necessitate replacement. To reassemble, install the lower spring seat, bump stop, and dust boot onto the shock absorber, followed by the spring and upper mount/upper seat, aligning the arrow or notch appropriately. With the spring compressed, install the rod nut, ensuring the ends of the spring fit into the recessed portion of the seats and maintaining the specified gap. Tighten the nut to the prescribed torque while keeping the position at both ends consistent. Finally, release the spring tension and reinstall the spring assembly in the vehicle.

Tighten the lower bolt and nut to the specified torque with the full weight of the vehicle on the ground, then tighten the upper mounting nuts to the specified torque.

Replace the shock absorbers.

In the engine compartment, mark the relationship of one of the mounting studs to the body, then remove the four upper mounting nuts.