The common test for shock damping involves bouncing the corners of the vehicle multiple times to observe if it stops bouncing after release; a slight rebound and settling indicate good damping, while continued bouncing suggests the need for shock absorber replacement. If the shock absorbers pass this test, a visual inspection of the shock body for fluid leakage, punctures, or deep dents is necessary, and any leaking or damaged shock absorber should be replaced regardless of the bounce test outcome. After removing the shock absorber, the piston rod should be pulled out and pushed back in several times to check for smooth operation; any hard or soft spots in the piston rod travel warrant replacement. Before installing new shock absorbers, the piston rod should be pumped fully in and out several times to lubricate the seals and fill the hydraulic sections. Caution is advised as low pressure gas shock absorbers are pressurized to 135 PSI with nitrogen gas, and should not be opened, punctured, or heated. The process begins by loosening the front wheel lug nuts on the side to be dismantled, raising the front of the vehicle, securely supporting it on jackstands, blocking the rear wheels, and setting the parking brake before removing the front wheel. The top nut is removed with a deep socket while holding the shaft with an open end wrench, followed by the removal of the bolt and nut securing the shock absorber to the radius arm. To detach the shock absorber, it should be slightly compressed and removed from its brackets. Installation follows the reverse order of removal, ensuring that new nuts and bolts are tightened to the specified torque, followed by the installation of the wheel and lug nuts, lowering the vehicle, and tightening the lug nuts to the appropriate torque.