The power steering actuator valve ball stud must be lubricated every 36 months or 36,000 miles. Wipe the area around the grease fitting or plug to remove all dirt or foreign material. On models without a grease fitting, remove the plug and install a fitting. Apply ball joint or multipurpose chassis lubricant to the fitting with a low-pressure grease gun. When the boot seal is seen or felt to bulge with lubricant, cease application. Any further lubrication will destroy the weather-tight seal. Remove the grease fitting and install a plug.