OEM Lincoln Navigator Air Suspension

Lincoln Navigator Air Suspension Parts and Q&A

• Air Spring, Rear
  7L1Z-5A891-B
  Q: How to Remove and Replace the Rear Air Suspension Shock Absorber on Lincoln Navigator?

  A:

  The procedure of removing and installing the rear air Shock Absorber begins with venting all air pressure from the air suspension system because unsafe conditions would otherwise develop. A scan tool should first be used to vent the proper air spring then you can move on to taking out the lower arm. Detach the electrical connector of the solenoid valve and break the air line connections at the valve through the orange lock ring compression followed by downward pulling on the air supply line. Use new upper shock nuts by discarding existing ones and applying torque of 40 Nm (30 lb-ft) to the new installations. My first step involves removing the air shock absorber while applying the hex holding feature to stop the shock rod from turning apart from removing and disposing of the shock rod nut which needs tightening at a torque force of 45 Nm (33 lb-ft) during assembly. Failure will occur when the retainer tabs break so the vehicle needs a new air spring installation. Referencing the position of index marks on the air spring and shock absorber will allow you to push down retainer tabs to extract the air spring assembly. Take out and dispose of the shock rod O-ring seal, washer and each of the lower air spring O-ring seals. The next step requires removal of two retainer screws together with the upper mount and two upper air spring O-ring seals and their disposal. A suitable press installation tool must be used to install the retainer pins on the upper mount through avoidance of hammer tools for preventing damage. SERE all seals for cleanliness and free this area from debris before you apply thin grease to new O-ring seals using the reverse removal process to install the components.