Lincoln Aviator: Fuel System - General Information - 3.0L EcoBoost / General Procedures - Spring Lock Couplings

Special Tool(s) / General Equipment

Disconnect Tool, Fuel Line


NOTICE: When reusing liquid or vapor tube connectors, make sure to use compressed air to remove any foreign material from the connector retaining clip area before separating from the tube or damage to the tube or connector retaining clip can occur. Apply clean engine oil to the end of the tube before inserting the tube into the connector.

NOTICE: Fuel injection equipment is manufactured to very precise tolerances and fine clearances. It is essential that absolute cleanliness is observed when working with these components or component damage can occur. Always install plugs to any open orifices or tubes.

  1. Disconnect the battery ground cable.
    Refer to: Battery Disconnect and Connect (414-01 Battery, Mounting and Cables, General Procedures).
  1. If servicing a liquid fuel tube spring lock coupling, release the fuel system pressure.
    Refer to: Fuel System Pressure Release (310-00A Fuel System - General Information - 3.0L EcoBoost, General Procedures).
  1. Install the Fuel Line Disconnect Tool on the tube and push into the spring lock coupling to release.
    Use Special Service Tool: 310-250  Disconnect Tool, Fuel Line.
  1. Separate the spring lock coupling from the tube.


  1. Align and push the spring lock coupling onto the tube until fully seated.
  1. Pull on the coupling to make sure it is fully engaged.
  1. Connect the battery ground cable.
    Refer to: Battery Disconnect and Connect (414-01 Battery, Mounting and Cables, General Procedures).

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    Pressure release With the vehicle in NEUTRAL, position it on a hoist. Refer to: Jacking and Lifting (100-02 Jacking and Lifting, Description and Operation)...

    Other information:

    Lincoln Aviator 2020-2021 Service Manual: General Procedures - Exhaust Manifold Cleaning and Inspection

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    Seatbelt Height Adjustment

    WARNING: Position the seatbelt height adjuster so that the seatbelt rests across the middle of your shoulder. Failure to adjust the seatbelt correctly could reduce its effectiveness and increase the risk of injury in a crash.

    Adjust the height of the shoulder belt so the belt rests across the middle of your shoulder. Slide the adjuster up to raise the belt. Press the button and slide it down to lower the belt.

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