Lincoln Navigator: Engine - 3.5L EcoBoost (272kW/370PS) / Cylinder Head LH. Removal and Installation

Special Tool(s) / General Equipment

Materials

Removal

NOTICE: During engine repair procedures, cleanliness is extremely important. Any foreign material, including any material created while cleaning gasket surfaces that enters the oil passages, coolant passages or the oil pan, can cause engine failure.

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

1. Release the fuel system pressure.
   Refer to: Fuel System Pressure Release (310-00 Fuel System - General Information - 3.5L EcoBoost (272kW/370PS), General Procedures).
   

1. Disconnect the battery ground cable.
   Refer to: Battery Cables (414-01 Battery, Mounting and Cables, Removal and Installation).
   

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

1. Remove the LH camshaft.
   Refer to: Camshaft LH (303-01 Engine - 3.5L EcoBoost (272kW/370PS), Removal and Installation).
   

1. Remove the port injection fuel rail.
   Refer to: Port Injection Fuel Rail (303-04A Fuel Charging and Controls - 3.5L EcoBoost (272kW/370PS), Removal and Installation).
   

1. Remove and discard the fuel rail-to-fuel rail high-pressure tube.
   

1. • Position aside wire harness retainer. Remove the stud bolt and the ground wire.
     
   • Remove the bolt and position aside the body ground strap.
     

1. Remove and discard the LH M6 bolt.
   

1. NOTICE: Place clean shop towels over exposed engine cavities. Carefully remove the towels so foreign material is not dropped into the engine. Any foreign material (including any material created while cleaning gasket surfaces) that enters the oil passages or the oil pan, may cause engine failure.

   NOTICE: Aluminum surfaces are soft and can be scratched easily. Never place the cylinder head gasket surface, unprotected, on a bench surface

   NOTE: The cylinder head bolts must be discarded and new bolts must be installed. They are tighten-to-yield designed and cannot be reused.

   • Remove and discard the bolts from the LH cylinder head.
     
   • Remove the cylinder head.
     

1. Remove and discard the LH cylinder head gasket.
   

1. Remove the LH water jacket spacer.
   Use the General Equipment: Long Nose Pliers

1. NOTICE: Do not use metal scrapers, wire brushes, power abrasive discs or other abrasive means to clean the sealing surfaces. These tools cause scratches and gouges that make leak paths. Use a plastic scraping tool to remove all traces of the head gasket.

   NOTE: Observe all warnings or cautions and follow all application directions contained on the packaging.

   Make sure that the mating faces are clean and free of foreign material.
   Material: Motorcraft® Silicone Gasket Remover / ZC-30-A, AZC-30-C
   Material: Motorcraft® Metal Surface Prep Wipes / ZC-31-B

1. Support the cylinder head on a bench with the head gasket side up. Check the cylinder head distortion and the cylinder block distortion.
   Refer to: Cylinder Head Distortion (303-00 Engine System - General Information, General Procedures).
   

Installation

1. Inspect for any debri before installing the LH water jacket.
   

1. Install the LH water jacket flush with the bottom of the block.
   

1. Install the LH cylinder head gasket.
   

1. NOTE: Install new cylinder head bolts.

   Install the LH cylinder head and the new bolts. Tighten in the sequence shown in 5 stages.
   Torque:
     Stage 1:  177 lb.in (20 Nm)
     Stage 2:  33 lb.ft (45 Nm)
     Stage 3:  90°
     Stage 4:  90°
     Stage 5:  90°

1. Install the LH M6 bolt.
   Torque: 89 lb.in (10 Nm)

1. • Install the ground strap & the stud bolt. Connect the wire retainer.
     Torque:
       Stage 1:  89 lb.in (10 Nm)
       Stage 2:  20°
   • Position back the body ground strap and install the bolt.
     Torque: 97 lb.in (11 Nm)

1. Position the flare nuts and connect the fuel rail-to-fuel rail high-pressure fuel tube.
   Torque:
     Stage 1:  89 lb.in (10 Nm)
     Stage 2:  30°

1. Install the port injection fuel rail.
   Refer to: Port Injection Fuel Rail (303-04A Fuel Charging and Controls - 3.5L EcoBoost (272kW/370PS), Removal and Installation).
   

1. Install the LH camshaft.
   Refer to: Camshaft LH (303-01 Engine - 3.5L EcoBoost (272kW/370PS), Removal and Installation).
   

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

1. Connect the battery ground cable.
   Refer to: Battery Cables (414-01 Battery, Mounting and Cables, Removal and Installation).
   

1. Road test the vehicle.