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Home >> Ford >> 2021 >> Explorer Limited Hybrid, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 16 (Engine - 2.3L ECOBOOST (201KW/273PS)) >> Disassembly And Assembly Of Subassemblies >> Cylinder Head >> Disassembly

Cylinder Head: Disassembly

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: Aluminum surfaces are soft and can be scratched easily. Never place the cylinder head gasket surface, unprotected, on a bench surface.
NOTE: If the components are to be reinstalled, mark the location of the components removed, they must be installed in the same location.
  1. Remove the bolts and the coolant outlet and hose assembly.
    GFD510916Courtesy of FORD MOTOR COMPANY
  2. NOTE: Replace gasket if damaged.

    Inspect the coolant outlet gasket and replace as necessary.

    GFD510917Courtesy of FORD MOTOR COMPANY
  3. If equipped, remove the bolt and the engine lift eye.
    GFD510918Courtesy of FORD MOTOR COMPANY
    • Remove the CHT sensor and the exhaust manifold heat shield.

    • Discard the CHT sensor.

    GFD510919Courtesy of FORD MOTOR COMPANY
  5. NOTE: Pull out the fuel rails in the direction of the fuel injector axis or damage may occur to the fuel injectors.
    NOTE: When removing the fuel rails, the fuel injectors may remain in the fuel rails but normally remain in the cylinder head and require the use of a Fuel Injector Remover tool to extract.

    • Use compressed air and remove any dirt or foreign material from the cylinder head, block and general surrounding area of the fuel rail and injectors.

    • Remove the bolts and the fuel rail.

    GFD510920Courtesy of FORD MOTOR COMPANY
  6. Remove any of the fuel injectors that remained in the fuel rail.
    GFD510856Courtesy of FORD MOTOR COMPANY
  7. Remove any of the fuel injectors that remained in the cylinder head. Use Special Service Tool: 310-206 Remover, Fuel Injector., 307-005 (T59L-100-B) Slide Hammer.
    GFD510921Courtesy of FORD MOTOR COMPANY
  8. Remove the fuel injector clip.
    GFD510858Courtesy of FORD MOTOR COMPANY
  9. NOTE: Do not attempt to cut the lower Teflon® seal without first pulling it away from the fuel injector or damage to the injector may occur.
    NOTE: Be very careful when removing the lower Teflon® seals, not to scratch, nick or gouge the fuel injectors.

    1. Pull the lower Teflon® seal away from the injector. Use the General Equipment: Long Nose Pliers
    2. Carefully cut and discard the lower fuel injector Teflon® seals. Use the General Equipment: Knife

    GFD510859Courtesy of FORD MOTOR COMPANY
  10. Remove and discard the O-ring seal and fuel injector seal.
    GFD510860Courtesy of FORD MOTOR COMPANY
  11. Remove the bolts, stud bolt and the cylinder head cover.
    GFD510922Courtesy of FORD MOTOR COMPANY
  12. Remove and discard the cylinder head cover gasket.
    GFD510884Courtesy of FORD MOTOR COMPANY
    • Use compressed air to remove any foreign material in the spark plug well before removing the spark plugs.

    • Remove the spark plugs.

    GFD510923Courtesy of FORD MOTOR COMPANY
  14. NOTE: The intake and exhaust valve springs appear similar but are different parts and are not interchangeable. If the springs are to be reused they must be installed in their original location.
    NOTE: Use a small screwdriver and multi-purpose grease to remove the valve collets.

    Using the special tools, remove the valve collet, valve spring retainer and the valve spring. Use Special Service Tool: 303-300 (T87C-6565-A) Set, Valve Spring Compressor., 303-350 (T89P-6565-A) Compressor, Valve Spring., 303-472 (T94P-6565-AH) Adapter, Valve Spring Compressor., 303-1249 Valve Spring Compressor.

    Material: Motorcraft® Multi-Purpose Grease Spray / XL-5-A (ESB-M1C93-B)

    GFD510924Courtesy of FORD MOTOR COMPANY
  15. Inspect and install new parts, as necessary.
    GFD510925Courtesy of FORD MOTOR COMPANY
  16. NOTE: Use valve stem seal pliers (such as BeTooll HW0107 or equivalent).

    • Using the special tool, remove the valve seals.

    • Discard the valve stem seal.

    GFD510926Courtesy of FORD MOTOR COMPANY
    • Mark each valve location if the original valves are to be used.

    • Remove the valve.

    GFD510927Courtesy of FORD MOTOR COMPANY
  18. Inspect the valve seats.
    GFD510928Courtesy of FORD MOTOR COMPANY
  19. NOTE: Install new parts, as necessary.

    1. Inspect the end of the stem for grooves or scoring.
    2. Inspect the valve face and the edge for pits, grooves or scores.
    3. Inspect the valve head for signs of burning, erosion, warpage and cracking.
    4. Inspect the valve margin for wear.

    GFD510929Courtesy of FORD MOTOR COMPANY
  20. Repeat the appropriate removal steps for all of the other valves.
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