Nissan 55020-JA01B Rear Suspension Spring

Loosen the rear wheel lug nuts, raise the rear of the vehicle, support it securely on jackstands, and remove the wheels. Position a floor jack under the lower rear suspension arm and raise it slightly. Mark the relationship of the adjusting cam to the subframe before loosening the bolt for the rear lower suspension arm at the subframe. Remove the nut and bolt for the lower rear suspension arm at the knuckle. 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 seal. For installation, raise the lower suspension arm with a floor jack until it is at normal ride height, then tighten the suspension arm bolt and nuts to the specified torque, ensuring the marks on the adjusting cam and the subframe are aligned before tightening the fasteners. Finally, tighten the wheel lug nuts to the specified torque.

If the struts or coil springs show signs of wear such as leaking fluid, loss of damping capability, or physical damage like chips or cracks, consider all options before starting any work, as strut/shock absorber assemblies are not serviceable and must be replaced if issues arise. Strut assemblies with springs may be available on an exchange basis, which can save time and effort, so check the cost and availability of parts before disassembling the vehicle. To disassemble, remove the strut and spring assembly, mount it in a vise lined with wood or rags to prevent damage, and avoid excessive tightening. Following the tool manufacturer's instructions, install a spring compressor to relieve pressure from the upper spring seat, which can be verified by wiggling the spring. Remove the piston rod nut and the upper suspension support, inspecting the bearing for smooth operation and checking the rubber for any signs of deterioration. Lift the spring seat and upper insulator from the piston rod, checking the rubber spring seat for damage. Carefully lift the compressed spring from the assembly, ensuring the ends are pointed away from your body, and set it aside safely. Slide the dust boot off the piston rod and check the lower insulator for wear, replacing it if necessary. For reassembly, if replacing the lower insulator, position it correctly and extend the damper rod to install the dust boot. Place the coil spring onto the lower insulator, ensuring the end fits into the recessed portion. Install the upper insulator and spring seat, aligning the marks or arrows correctly, then install the dust seal and suspension support to the piston rod, tightening the nut to the specified torque before reinstalling the strut/shock absorber and coil spring assembly.