Removing Cylinder Head

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2018 Porsche Cayenne, 2017 Porsche Cayenne, 2016 Porsche Cayenne, 2015 Porsche Cayenne, and 2014 Porsche Cayenne. However, it is still accessible from the selected car via links, so may be relevant.

Remove vent line.
1. 1.1. Unscrew fastening screws -1- .
2. 1.2. Unclip vent line -2- from the cable duct and remove it -arrow- .
  
  Fig 1: Locating Vent Line
  Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Expose the engine wire harness close to the vacuum pump. → Engine wire harness close to vacuum pump → Engine wire harness at the rear right

Fig 2: Locating Engine Wire Harness Close To Vacuum Pump
Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Fig 3: Locating Engine Wire Harness (Rear Right)
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Unclip the engine wire harness close to the high-pressure pump.
1. 3.1. Unclip the engine wire harness at the retaining clips -arrows A- .
2. 3.2. Unscrew the screw socket -arrow B- .
  
  Fig 4: Locating Engine Wire Harness Close To High-Pressure Pump
  Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Lift the wire harness up and out at the cylinder heads -arrow-

Fig 5: Locating Engine Wire Harness
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Remove mounting saddle at the front -8- (cylinder bank 1 to 4 shown). This hides the cylinder head screws underneath.

Fig 6: Identifying Camshafts (Cylinder Bank 1 To 4)
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
1. Camshaft (Outlet)
2. Camshaft (Intake)
3. Hydraulic Valve For Variable Valve Lift Control
4. Screw, M5 x 12
5. Switching Tappet (Oil With Engine Oil)
6. Bucket Tappet (Oil With Engine Oil)
7. Stopper
8. Mounting Saddle 1 To 4
9. Stopper
10. Bearing Locations (Oil With Engine Oil)
1. Direction Of Travel
Remove front M8 screw securing the cylinder head of cylinders 1 to 4 to the crankcase. -3-

Fig 7: Identifying Cylinder Head (1-4)
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Remove cylinder head screws in the opposite order to the tightening sequence shown → Tightening sequence for cylinder head . Remove cylinder head. If necessary, remove the valve lifters now and lay them aside in the correct order.

Fig 8: Cylinder Head Bolt Tightening Sequence
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Remove cylinder head gasket.
Remove cylinder head for cylinders 5 to 8 in the same way. → Cylinder head 5 to 8

Fig 9: Identifying Cylinder Head (5-8)
Courtesy of PORSCHE CARS NORTH AMERICA, INC.