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Home >> Ford >> 2021 >> Explorer Limited Hybrid, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 18 (Engine - 3.3L DURATEC-V6) >> Removal And Installation >> Cylinder Head LH >> Removal

Cylinder Head LH: Removal

WARNING: This page is about a different variant/trim than selected.
NOTE: 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.
NOTE: If the cylinder head is replaced, a new secondary timing chain tensioner will need to be installed. Refer to Variable Camshaft Timing (VCT) Unit  .
  1. With the vehicle in NEUTRAL, position it on a hoist. Refer to: Jacking and Lifting - Overview .
  2. Release the fuel system pressure. Refer to: Fuel System Pressure Release .
  3. Disconnect the battery ground. Refer to: Battery Disconnect and Connect .
  4. Drain the cooling system. Refer to: Engine Cooling System Draining, Vacuum Filling and Bleeding .
  5. Remove the cowl panel. Refer to: Cowl Panel .
  6. Remove the pin-type retainer, bolts and the rear underbody shield.
    GFD510498Courtesy of FORD MOTOR COMPANY
  7. Remove the following items:

    1. Remove the LH catalytic converter. Refer to: Catalytic Converter LH .
    2. Remove the LH camshafts. Refer to: Camshafts .

    • Loosen the fuel rail to fuel rail high-pressure fuel tube flare nuts and remove.

    • Discard the fuel rail to fuel rail high-pressure fuel tube.

    GFD511716Courtesy of FORD MOTOR COMPANY
  9. Remove the fastener and ground wire from the rear side of LH head.
    GFD511717Courtesy of FORD MOTOR COMPANY
    • Detach and disconnect the direct injection wiring harness electrical connector.

    • Disconnect the CMP sensor electrical connectors and detach the wiring harness retainer.

    GFD511718Courtesy of FORD MOTOR COMPANY
  11. Remove the bolts and the CMP sensors.
    GFD511719Courtesy of FORD MOTOR COMPANY
  12. NOTE: Do not use power tools to remove the bolt or damage to the upper LH timing chain guide may occur.

    Remove the bolt and the upper LH timing chain guide.

    GFD511720Courtesy of FORD MOTOR COMPANY
  13. NOTE: If the components are to be reinstalled, they must be installed in the same positions. Mark the components for installation into their original locations.

    Remove the valve tappets.

    GFD511721Courtesy of FORD MOTOR COMPANY
  14. Inspect and install new components as necessary.
    GFD510732Courtesy of FORD MOTOR COMPANY
  15. Remove and discard the M6 bolt.
    GFD511722Courtesy of FORD MOTOR COMPANY
  16. NOTE: 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.
    NOTE: 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.

    • With the aid of an assistant, remove the cylinder head.

    GFD511723Courtesy of FORD MOTOR COMPANY
  17. NOTE: 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.

    • Make sure that the mating faces are clean and free of foreign material.

    • Support the cylinder head on a bench with the head gasket side up and check the cylinder head distortion. Refer to: Cylinder Head Distortion .

    GFD511724Courtesy of FORD MOTOR COMPANY
  18. Remove and discard the cylinder head gasket.
    GFD511725Courtesy of FORD MOTOR COMPANY
  19. NOTE: Place clean, lint-free 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.
    NOTE: 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.

    • Make sure that the mating faces are clean and free of foreign material.

GFD511726Courtesy of FORD MOTOR COMPANY
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