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HOMESERVICE MANUALSLINCOLN2009NAVIGATOR L RWDREPAIR AND DIAGNOSISHEATING, VENTILATION & A/C (HVAC)HVAC CONTROL SYSTEMSHVAC CLIMATE CONTROL SYSTEM - GENERAL INFORMATION AND DIAGNOSTICSGENERAL PROCEDURESSPRING LOCK COUPLINGDISCONNECT
2009 Lincoln Navigator L RWD

Spring Lock Coupling: Disconnect

2009 Lincoln Navigator L RWDSECTION Disconnect
NOTE: If a leak has been found at a spring lock coupling, inspect the O-ring sealing surfaces on the male and female sides of the fitting for damage or scratches. Replace the affected component if damage is identified. If no damage is present, thoroughly clean both sides of the fitting using a suitable non-abrasive cloth, lubricate with PAG oil and install new O-ring seals. Due to subtle differences in O-ring sizes, it is critical for leak prevention that the correct O-ring seal be identified. Refer to the Ford Catalog Advantage™ or equivalent for the specific vehicle and application. When repairs are complete, leak test the spring lock coupling to verify the repair.
  1. Remove the spring lock coupling clip, if equipped.
    2. NOTE: Do not use metal tools to remove the O-ring seals. They may cause axial scratches across the O-ring seal grooves, resulting in refrigerant leaks.
  2. Push the Refrigerant Coupling Spring Remover into the cage opening to release the female fitting from the spring lock coupling spring and pull the fitting apart.
    • Remove the O-ring seals using a non-metallic tool.
      Fig 1: Removing O-Ring Seals
      G06133227Courtesy of FORD MOTOR CO.
    3. NOTE: Do not use a screwdriver or similar tool to remove the Air Conditioning (A/C) tube lock coupling spring; this may cause axial scratches across the O-ring seal grooves resulting in refrigerant leaks.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.