Lincoln Navigator: Fuel Tank and Lines - 3.5L EcoBoost (272kW/370PS) / Fuel Pump and Sender Unit. Removal and Installation

Special Tool(s) / General Equipment

310-123 Locking Ring, Fuel Tank TKIT-2004J-F TKIT-2005U-LM

Removal

NOTE: Removal steps in this procedure may contain installation steps.

1. Remove the Fuel Tank.
   Refer to: Fuel Tank (310-01 Fuel Tank and Lines - 3.5L EcoBoost (272kW/370PS), Removal and Installation).
   

1. Remove three nuts and remove the support guard.
   

1. NOTE: To avoid introducing contamination into the fuel tank use compressed air to clean the Fuel Pump and Sender Unit connections, couplings, flange surfaces and the immediate surrounding area of any dirt or foreign material.

   Disconnect the fuel feed and fuel vapor tubes.
   Refer to: Quick Release Coupling (310-00) .
   

1. Using the lock ring tool, unlock and remove the Fuel Pump and Sender unit lock ring.
   Use Special Service Tool: 310-123  Locking Ring, Fuel Tank.

1. Lift the Fuel Pump and Sender unit slightly and disconnect the vent line.
   Refer to: Quick Release Coupling (310-00) .
   

1. NOTE: If the Fuel Pump and Sender Unit does not clear the fuel tank opening, insert a screwdriver into the empty rod hole and slightly pull the screwdriver inboard until the Fuel Pump and Sender Unit aligns with the fuel tank opening.

   NOTE: Remove and discard the Fuel Pump Module O-ring seal.

   NOTE: Some residual fuel may remain in the Fuel Pump and Sender Unit. Carefully drain into a suitable container.

   NOTE: The Fuel Pump and Sender Unit must be handled carefully to avoid damage to the float arm and filter.

   NOTE: Inspect the mating surfaces of the Fuel Pump and Sender Unit flange and fuel tank O-ring seal contact surfaces. Wipe clean with a lint free towel. Install a new Fuel Pump and Sender Unit or fuel tank if the Oring seal contact area is bent, scratched or corroded.

   Remove the Fuel Pump and Sender Unit.
   

Installation

1. NOTE: Make sure to install a new Fuel Pump and Sender Unit O-ring seal.

   NOTE: Make sure the alignment tabs on the Fuel Pump and Sender Unit and the fuel tank meet prior to tightening the Fuel Pump and Sender Unit lock ring.

   To install, reverse the removal procedure.