Lincoln Navigator: Engine - 3.5L EcoBoost (272kW/370PS) / Cylinder Head RH. 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 EGR cooler.
   Refer to: Exhaust Gas Recirculation (EGR) Cooler (303-08 Engine Emission Control - 3.5L EcoBoost (272kW/370PS), Removal and Installation).
   

1. • Disconnect the heater hose.
     
   • Disconnect the electrical connector.
     
   • Disconnect the pin-type retainer.
     
   • Remove the bolts and the cabin heater pump.
     

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

1. Remove the RH camshaft.
   Refer to: Camshaft RH (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. Remove the retainers and the heat shield.
   

1. • Disconnect the CHT sensor electrical connector.
     
   • Disconnect the CMP sensor electrical connectors.
     
   • Position aside wire retainer. Remove the studbolt and the ground wire.
     
   • Disconnect the pin-type retainer.
     

1. Remove and discard the CHT sensor.
   

1. Remove the bolts and the CMP sensors.
   

1. Remove and discard the RH 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 RH cylinder head.
     
   • Remove the cylinder head.
     

1. Remove and discard the RH cylinder head gasket.
   

1. Remove the RH 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 Block Distortion (303-00 Engine System - General Information, General Procedures).
   

Installation

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

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

1. Install the RH cylinder head gasket.
   

1. NOTE: Install new cylinder head bolts.

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

1. Lubricate the CMP sensor O-ring seal with clean engine oil.
   Refer to: Specifications (303-01 Engine - 3.5L EcoBoost (272kW/370PS)) .
   

1. Install the bolts and the CMP sensors.
   Torque: 71 lb.in (8 Nm)

1. Install the new CHT sensor.
   Torque: 97 lb.in (11 Nm)

1. • Connect the pin-type retainers.
     
   • Connect the CHT sensor electrical connector.
     
   • Connect the CMP sensor electrical connectors.
     
   • Install the wiring harness ground and the studbolt. Position back the wire retainer.
     Torque:
       Stage 1:  89 lb.in (10 Nm)
       Stage 2:  20°

1. Install the heat shield and the retainers.
   Torque: 89 lb.in (10 Nm)

1. Install the fuel rail-to-fuel rail high-pressure fuel tube and tighten the flare nuts.
   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 RH camshaft.
   Refer to: Camshaft RH (303-01 Engine - 3.5L EcoBoost (272kW/370PS), Removal and Installation).
   

1. • Install the cabin heater pump and bolts.
     
   • Connect the pin-type retainer.
     
   • Connect the electrical connector.
     
   • Connect the heater hose.
     

1. Install the EGR cooler.
   Refer to: Exhaust Gas Recirculation (EGR) Cooler (303-08 Engine Emission Control - 3.5L EcoBoost (272kW/370PS), Removal and Installation).
   

1. Install the RH turbocharger.
   Refer to: Turbocharger RH (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.