GM 21018789 Front Spring Kit

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The first thing to do when replacing worn shock absorbers or coil springs is checking for typical signs of wear such as fluid leaks, loss of damping or damaged coil springs. Think about replacement options and check the parts availability. The shock absorber/coil spring assembly should be removed and the pressure on the upper spring seat released by means of a spring compressor. At this stage hold the shock damper shaft in one hand while the retaining nut is removed with the other hand. Other components like upper cup, insulator, top carrier, lower insulator, sleeve, lower cup and bump stop have to be removed as well. If you are replacing the spring, carefully release it from the compressor. Inspect all components for wear and replace as needed. When working with both assemblies, remember to label them left and right springs. The shock should be inspected for fluid leaks, pitting on the damper shaft or damage to the shock body. Its operation has to be tested for smooth uninterrupted resistance. Replace it in case of any found issues. The extended shock damper shaft should have rubber bump stop fitted onto it as well as lower cup, lower insulator and sleeve Install the compressed coil spring on lower seat ensuring that it contacts at its bottom most part Position upper spring seat on top carrier then install top carrier on shock damper shaft with coil spring such that the end of spring fits into upper seat's recessed portion When installing tightened upper insulator upon cup then retain nut Remove the compressing tool finally reinstalling assembly of absorber/shock coil.

Extend the damper rod, install the rubber bump stop, and place the compressed coil spring onto the lower seat of the damper, ensuring the end rests against the raised stop. Install the upper insulator, spring seat, upper mount, and mounting nut, then tighten it to the specified torque.

After the top carrier, you should install the upper insulator, cup, and retaining nut, tightening it to the specified torque.

Support the shock, remove the shock carrier-to-body lower mounting bolts.

Support the shock, remove the shock carrier-to-body lower mounting bolts.

Complete strut assemblies, including springs, might be available for exchange, which can save time and effort.