Nissan 55020-4BA0D Spring - Rear Suspension

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Loosen the rear wheel lug nuts, raise the rear of the vehicle, support it securely on jackstands, and remove the wheel. Position a floor jack under the coil spring seat portion of the trailing arm, then raise the jack slightly. Remove the brake caliper, caliper mounting bracket, and brake disc. Remove the ABS wheel speed sensor. Unbolt the upper and lower control arms from the trailing arm. Detach the stabilizer bar link from the lower control arm. Separate the parking brake cable and brake pipe from the trailing arm, and disconnect the height sensor if equipped. Remove both shock absorber lower mounting bolts. On AWD models, remove the driveaxle. Carefully lower the suspension arm using the floor jack until the coil spring is fully extended, then remove the coil spring, the rubber mount, and the rubber seat. Installation is the reverse of removal, noting to raise the trailing arm with a floor jack until it is at normal ride height, then tighten the suspension component bolts/nuts to the specified torque, tighten the brake fasteners to the specified torque, and on AWD models, tighten the driveaxle hub nut to the specified torque. Finally, tighten the wheel lug nuts to the specified torque. If there is difficulty aligning the upper and lower control arm bolt holes with the holes in the trailing arm, a come-along can be used to connect the trailing arm on both sides, allowing for adjustment and alignment with a long drift punch for bolt insertion.

Slide the dust boot off the piston rod and check the lower insulator for wear, replacing it if necessary.

Check the strut body for leaking fluid, dents, cracks, and other damage that may require repair or replacement. Inspect the coil spring for chips or cracks in the coating, which could lead to premature failure due to corrosion, and examine the spring seat for cuts, hardness, and general deterioration.