Lincoln Navigator: Fuel Charging and Controls - Turbocharger - 3.5L EcoBoost (272kW/370PS) / Turbocharger Oil Return Tube LH. Removal and Installation

Materials

Removal

NOTICE: The turbocharger compressor vanes can be damaged by even the smallest particles. When removing any turbocharger or engine air intake system component, ensure that no debris enters the system. Failure to do so may result in damage to the turbocharger.

NOTICE: Special attention needs to be given to the sealing ports for the oil feed, the oil drain, and the coolant lines, on turbocharged engines. The sealing ports must be totally clean and free from O-ring residue, have no damage to the sealing surface and the lines to ensure that there are no leaks or repeat repairs.

1. Remove the turbocharger oil supply tube LH.
   Refer to: Turbocharger Oil Supply Tube LH (303-04B Fuel Charging and Controls - Turbocharger - 3.5L EcoBoost (272kW/370PS), Removal and Installation).
   

1. Remove the turbocharger oil return tube bolts, then remove and discard the turbocharger oil return tube.
   

Installation

1. Lubricate the new turbocharger oil return tube O-ring seals with clean engine oil.
   Refer to: Specifications (303-01 Engine - 3.5L V6 PowerBoost (CN)) .
   

1. 1. NOTICE: Do not use a metal brush, damage to the sealing area will result in leaks.

      Carefully use a nylon brush to remove the old O-ring residue, use brake cleaner to rinse the O-ring residue out of the turbocharger and engine O-ring bores. Inspect the area for deep scratches and gouges. Install new components if necessary.
      
   2. Fully seat the turbocharger oil return tube into the turbocharger and engine bore holes flush to 2.5 mm off of the mounting surface prior to tightening the bolts. Install the new turbocharger oil return tube, then install and tighten the turbocharger oil return tube bolts.
      Material: Motorcraft® Metal Brake Parts Cleaner / PM-4-A, PM-4-B, APM-4-C
      Torque:
        Stage 1:  Tighten to :   89 lb.in (10 Nm)
        Stage 2:  Tighten an additional :   30°

1. Install the turbocharger oil supply tube LH.
   Refer to: Turbocharger Oil Supply Tube LH (303-04B Fuel Charging and Controls - Turbocharger - 3.5L EcoBoost (272kW/370PS), Removal and Installation).