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Home >> Porsche >> 2021 >> 911 Targa 4 >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> 15 Engine - Cylinder Head, Valve Drive 3.0L (Eng Code MDK.Ca) -- 992 - 911 CARRERA (992) >> WM, 157019 Removing And Installing Cylinder Heads >> Removing Cylinder Head >> Removing Cylinder Head (Cylinders 4-6)

Removing Cylinder Head (Cylinders 4-6)

NOTE: Dirt and contamination
  • Risk of damage to units or components

    → Protect components from dii t and contamination.

    → Clean or replace dirty components.

Information 

  1. Remove hydraulic tappets.

    Pull bucket tappets -1-  and switching tappets -2-  out of the fitting bores in the cylinder head.

    G15484807Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Hydraulic tappets for valve control

    Set bucket and switching tappets down on a clean, labelled surface > Laying aside hydraulic tappets (shown as an example)  .

    G15484808Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Laying aside hydraulic tappets (shown as an example)

  2. Loosen fuel line holder -1-  .

    Release and disconnect electric plug connections -2-  .

    Unscrew screw on fuel line holder -3-  .

    G15484809Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Fuel line holder

  3. Loosen line connections on cylinder head.

    Unscrew and remove screws -1-  .

    Disconnect lines -2-  .

    Close off line connections using suitable stoppers.

    G15484810Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Line connections on cylinder head

  4. Unscrew screw on heat shield -1-  .
    G15484811Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Heat shield

  5. Unscrew bearing pin -2-  .
    G15484812Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Position of bearing pins

  6. Unscrew screws for chain housing -1-  .
    G15484813Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Chain housing screws

  7. Unscrew cylinder head screws -1-  .
    G15484814Courtesy of PORSCHE CARS NORTH AMERICA, INC.

    Cylinder head screws

  8. Remove cylinder held.
  9. Check fitting bores of the hydraulic tappets for wear. If you see signs of wear, replace the relevant cylinder head and any worn hydraulic tappets.
  10. Check the sealing face of the cylinder head for distortion and wear during re-installation. Carry out the required repair measures if necessary.
  11. Remove and dispose of cylinder head gasket.
  12. Check dowel sleeves for signs of damage and replace them if necessary.