Question 1

What factors should you consider before working on the front coil springs and shock absorber showing signs of wear on Nissan Altima?

Accepted Answer

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.

Question 2

How to properly remove and install a front coil springs and shock absorber on Nissan Murano?

Accepted Answer

Take the wheels off,turn the front wheel lug nuts until they are loose, lift the front of the car, and only then put it on jackstands safely. Then, unfasten a bolt and nut that secures the wheel speed sensor to the bracket and pull the brake hose off the strut's bracket. Remove the nut of link to the stabilizer bar, and strut-to-knuckle bolts by using hammer and punch on the bolts. Cautiously take the strut apart from the steering knuckle, do not over stretch the inner CV joint and do not allow the knuckle to fall to the outside as this will damage the brake hose and ABS speed sensor wiring if the car is equipped with them. Unscrew the cowl cover to expose the upper section of the struts: supporting the strut and spring assembly with your hand, unscrew the three upper mounting bolts and then pull the assembly from the fenderwell. Curiously examine the strut body for evidence of fluid leakage, dents, splits, and other types of damage that will need repair or replacement and looks for chips or cracks in the protective coating of the coil spring, and signs of cuts, hardness, or other types of deterioration on the spring seat. If any problem is identified, go to the next step of the disassembly of the strut. For installation, insert the strut assembly into the fader well and fit the upper mounting bolts then tight them to factory recommended torque and preferably in twos given the weight and of the strut assembly. Place the steering knuckle into the Subaru strut flange, put the bolts into the holes, and screw on the nuts, torque to the specified value. Perform the following actions to complete the removal process: tighten the stabilizer bar link nut, then tighten the wheel lug nuts to the specified torque; the front end alignment check and adjustment might also be required.

Question 3

How to replace the coil springs and shock absorber on the front struts of a Nissan Pathfinder?

Accepted Answer

If the struts or coil springs exhibit signs of wear such as leaking fluid, loss of damping capability, chipped, sagging or cracked coil springs, explore all options before beginning any work. The strut shock absorber assemblies are not serviceable and must be replaced if a problem develops. However, strut assemblies complete with springs may be available on an exchange basis, which eliminates much time and work. Check on the cost and availability of parts before disassembling your vehicle. Remove the strut and spring assembly. Mount the strut assembly in a vise. Line the vise jaws with wood or rags to prevent damage to the unit and don't tighten the vise excessively. Install the spring compressor on the spring and compress it sufficiently to relieve all pressure from the upper spring seat. This can be verified by wiggling the spring. Remove the piston rod nut. Remove the upper mount. Inspect the bearing in the mount for smooth operation. If it does not turn smoothly, replace it. Check the rubber portion of the mount for cracking and general deterioration. If there is any separation of the rubber, replace it. Lift the springseat and upper insulator from the piston rod. Check the rubber springseat for cracking and hardness, replacing it if necessary. Carefully lift the compressed spring from the assembly and set it in a safe place. Slide the dust boot off the piston rod. Check the lower insulator for wear, cracking and hardness and replace it if necessary. If the lower insulator is being replaced, set it into position with the dropped portion seated in the lowest part of the seat. Extend the damper rod to its full length and install the dust boot. Carefully place the coil spring onto the lower insulator, with the end of the spring resting in the lowest part of the insulator. Install the upper insulator and the spring seat. Make sure the cutout on the spring seat is facing in, away from the strut-to-knuckle flange. Install the dust seal and upper mount to the piston rod. Install a new piston rod nut and tighten it to the torque. Install the strut assembly.

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