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Home >> Ford >> 2022 >> Transit Connect Titanium, Gas/Ethanol >> Repair and Diagnosis >> External Pages >> Different car >> Section 412 (Engine - 3.5L ECOBOOST (272KW/370PS) (Removal - Disassembly & Assembly)) >> Disassembly And Assembly Of Subassemblies >> Cylinder Head >> Disassembly

Cylinder Head: Disassembly

WARNING: This page is about a different car, the 2020 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: 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.
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.

LH cylinder head 

  1. Remove Special Service Tool: 303-1654 Lift Eyes.
    GFD460573Courtesy of FORD MOTOR COMPANY
  2. Remove the TC coolant return tube bolt and disconnect the TC coolant return tube.
    GFD460574Courtesy of FORD MOTOR COMPANY
  3. Remove the bolts and the TC.
    GFD460575Courtesy of FORD MOTOR COMPANY
  4. Remove and discard the TC gasket.
    GFD460576Courtesy of FORD MOTOR COMPANY
  5. Inspect the TC and clean, if necessary.
    • Remove the nuts and the exhaust manifold.

    • Discard the nuts.

    GFD460577Courtesy of FORD MOTOR COMPANY
    • Remove the discard the exhaust manifold gasket.

    • Remove and discard the studs.

    GFD460578Courtesy of FORD MOTOR COMPANY

    • NOTE: Do not use metal scrapers, wire brushes, power abrasive discs or other abrasive means to clean the sealing surfaces. These may cause scratches and gouges resulting in leak paths. Use a plastic scraper to clean the sealing surfaces.

      Clean the exhaust manifold mating surface of the cylinder head with metal surface prep wipes. Follow the directions on the packaging.

      Material: Motorcraft® Metal Surface Prep Wipes / ZC-31-B

    1. Remove and discard the port injection fuel rail mounting bolts.
    2. NOTE: Pull out the fuel rails in the direction of the fuel injector axis or damage may occur to the fuel injectors.

      Remove the port injection fuel rail and the fuel injectors.

    GFD460579Courtesy of FORD MOTOR COMPANY
  10. Disconnect the fuel injector electrical connectors.
    GFD460580Courtesy of FORD MOTOR COMPANY
    • Release the fuel injector retaining clips.

    • Remove the fuel injectors from the fuel rail.

    GFD460581Courtesy of FORD MOTOR COMPANY
  12. Remove and discard the clips from all of the fuel injectors including any injectors that have remained in the cylinder head.
    GFD460582Courtesy of FORD MOTOR COMPANY
  13. Remove and discard all of the fuel injector O-ring seals.
    GFD459188Courtesy of FORD MOTOR COMPANY
    1. Remove and discard the direct injection fuel rail mounting bolts.
    2. 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 cylinder heads and require the use of a Fuel Injector Remover tool to extract. Wiggling the injector by hand to break it loose may allow the injector to be removed by hand.

      Remove the direct injection fuel rail and the fuel injectors.

    GFD460583Courtesy of FORD MOTOR COMPANY
  15. Disconnect the fuel injector electrical connectors.
    GFD460584Courtesy of FORD MOTOR COMPANY
    • Release the fuel injector retaining clips.

    • Remove the fuel injectors from the fuel rail.

    GFD460585Courtesy of FORD MOTOR COMPANY
  17. Remove and discard the clips from all of the fuel injectors including any injectors that have remained in the cylinder head.
    GFD460586Courtesy of FORD MOTOR COMPANY
    • Remove and discard the fuel injector O-ring seals.

    • NOTE: Note the correct orientation of the fuel injector support rings for correct installation of the new fuel injector support rings.

      Remove and discard the fuel injector support rings.

    GFD460587Courtesy of FORD MOTOR COMPANY
  19. NOTE: Use care when removing the lower Teflon® seals, not to scratch, nick or gouge the fuel injectors.
    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.

    • Pull the lower Teflon® seal away from the injector.

    • Carefully cut and discard the lower fuel injector Teflon® seals.

    GFD460588Courtesy of FORD MOTOR COMPANY

    RH cylinder head 

  20. Remove Special Service Tool: 303-1654 Lift Eyes.
    GFD460589Courtesy of FORD MOTOR COMPANY
  21. Remove the TC coolant return tube bolt and disconnect the TC coolant return tube.
    GFD460590Courtesy of FORD MOTOR COMPANY
  22. Remove the bolts and the TC.
    GFD460591Courtesy of FORD MOTOR COMPANY
  23. Remove and discard the TC gasket.
    GFD460592Courtesy of FORD MOTOR COMPANY
  24. Inspect the TC and clean, if necessary.
  25. Remove and discard the CHT sensor.
    GFD460593Courtesy of FORD MOTOR COMPANY
    • Remove the nuts and the exhaust manifold.

    • Discard the nuts.

    GFD460594Courtesy of FORD MOTOR COMPANY
  27. Remove and discard the studs and the exhaust manifold gasket.
    GFD460595Courtesy of FORD MOTOR COMPANY

    • NOTE: Do not use metal scrapers, wire brushes, power abrasive discs or other abrasive means to clean the sealing surfaces. These may cause scratches and gouges resulting in leak paths. Use a plastic scraper to clean the sealing surfaces.

      Clean the exhaust manifold mating surface of the cylinder head with metal surface prep wipes. Follow the directions on the packaging.

      Material: Motorcraft® Metal Surface Prep Wipes / ZC-31-B

    1. Remove and discard the port injection fuel rail mounting bolts.
    2. NOTE: Pull out the fuel rails in the direction of the fuel injector axis or damage may occur to the fuel injectors.

      Remove the port injection fuel rail and the fuel injectors.

    GFD460596Courtesy of FORD MOTOR COMPANY
  30. Disconnect the fuel injector electrical connectors.
    GFD460597Courtesy of FORD MOTOR COMPANY
    • Release the fuel injector retaining clips.

    • Remove the fuel injectors from the fuel rail.

    GFD460598Courtesy of FORD MOTOR COMPANY
  32. Remove and discard the clips from all of the fuel injectors including any injectors that have remained in the cylinder head.
    GFD460582Courtesy of FORD MOTOR COMPANY
  33. Remove and discard all of the fuel injector O-ring seals.
    GFD459188Courtesy of FORD MOTOR COMPANY
    1. Remove and discard the direct injection fuel rail mounting bolts.
    2. 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 cylinder heads and require the use of a Fuel Injector Remover tool to extract. Wiggling the injector by hand to break it loose may allow the injector to be removed by hand.

      Remove the direct injection fuel rail and the fuel injectors.

    GFD460599Courtesy of FORD MOTOR COMPANY
  35. Disconnect the fuel injector electrical connectors.
    GFD460600Courtesy of FORD MOTOR COMPANY
    • Release the fuel injector retaining clips.

    • Remove the fuel injectors from the fuel rail.

    GFD460601Courtesy of FORD MOTOR COMPANY
  37. Remove and discard the clips from all of the fuel injectors including any injectors that have remained in the cylinder head.
    GFD460586Courtesy of FORD MOTOR COMPANY
    • Remove and discard the fuel injector O-ring seals.

    • NOTE: Note the correct orientation of the fuel injector support rings for correct installation of the new fuel injector support rings.

      Remove and discard the fuel injector support rings.

    GFD460587Courtesy of FORD MOTOR COMPANY
  39. NOTE: Use care when removing the lower Teflon® seals, not to scratch, nick or gouge the fuel injectors.
    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.

    • Pull the lower Teflon® seal away from the injector.

    • Carefully cut and discard the lower fuel injector Teflon® seals.

    GFD460588Courtesy of FORD MOTOR COMPANY

    All cylinder heads 

  40. NOTE: Use minimal force to remove the fuel injectors that remained in the cylinder head with the Fuel Injector Remover tool or damage to the fuel injector assembly may occur.

    Using the special tools, remove the fuel injectors that remained in the cylinder head. Use Special Service Tool: 307-005 (T59L-100-B) Slide Hammer., 310-206 Remover, Fuel Injector.

    GFD460602Courtesy of FORD MOTOR COMPANY
  41. NOTE: Make sure to thoroughly clean any residual fuel or foreign material from the cylinder head, block and the general surrounding area of the fuel rails and injectors.
    NOTE: Do not use compressed air to clean the tip of the fuel injector.
    NOTE: Do not use a brush to clean the tip of the fuel injector.

    Using the special tool, clean the cylinder head fuel injector bores. Use Special Service Tool: 310-205 Fuel Injector Brush.

    GFD460603Courtesy of FORD MOTOR COMPANY
  42. Remove the spark plugs.
    GFD459197Courtesy of FORD MOTOR COMPANY
  43. NOTE: LH shown, RH similar.
    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.

    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., 303-1249 Valve Spring Compressor., 303-1418 Compressor, Valve Spring.

    GFD460604Courtesy of FORD MOTOR COMPANY
  44. Remove and discard the valve stem seal.
    GFD460605Courtesy of FORD MOTOR COMPANY
  45. Remove the valve.
    GFD460606Courtesy of FORD MOTOR COMPANY
  46. Repeat the previous 3 steps for each valve.
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