Assembling Cylinder Head
WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2013 Porsche 911, 2012 Porsche 911, 2011 Porsche 911, 2010 Porsche 911, and 2009 Porsche 911. However, it is still accessible from the selected car via links, so may be relevant.
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Reusable inner parts of the cylinder head must always be cleaned thoroughly and assigned to their original installation location.
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- Valve springs and valve-spring plates are different for intake and outlet valves.
- The valve springs for the intake valves are conical, while the valve springs for the outlet valves are cylindrical. Check installation position!
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- The flexible rotating head of the assembly cartridge must be positioned almost on the assembly cartridge.
- If this is not the case, the valve key mounting will not be positioned over the valve stem and the valve keys will not be moved to the correct position.
- Insert corresponding valve springs and upper valve-spring plate.
- Insert guide bush -2-
and push it down as far as it will go.
- 2.1. Insert assembly cartridge -3- with secured valve keys into the guide bush.
- Engage pressure fork with lever -4- at a suitable position on the engaging lock -1- and support it on the assembly cartridge -3- .
- Press the valve springs together using the pressure forks.
- 4.1. The valve keys are released by pulling on the assembly cartridge -arrow- and are positioned on the valve stem.
- Remove pressure folk with lever and assembly cartridge and check that the valve keys are seated securely.
- 5.1. Repeat the process if necessary.