Ford DG9Z-18125-V Shock Absorber Assembly

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Attempt to move each control arm up and down with a prybar to check for play; if play is present, the ball joint is worn and should be replaced as part of the control arm replacement process. Inspect the ball joint boots for damage and grease leakage.

Remove the lower shock mounting bolt. Remove the rear shock lower mounting nut and bolt (2012 and earlier models).

Proceed to the shock absorber/coil spring disassembly procedure.

Examine the shock for signs of fluid leakage. Check the piston rod for signs of pitting along its entire length, and check the shock body for signs of damage. Test the operation of the shock, while holding it in an upright position, by moving the piston through a full stroke, then through short strokes of 2 to 4 inches. In both cases, the resistance felt should be smooth and continuous. If the resistance is jerky or uneven, or if there is any visible sign of wear or damage, replacement is necessary.