Cayenne Turbo (9PA) V8-4.8L Turbo (2008)
Turn the knurled screw back and forth
The knurled screw retracts.
3.3.
Remove the assembly cartridge and check correct position of both valve keys -1-.
Valve keys in assembly cartridge
3.4.
Pull out the knurled screw from the assembly cartridge -1- and knock out the valve keys -2-.
Remove the valve keys
4. Remove valve springs, spring plate and valve keys from the cylinder head.
5. Remove valve locks and push the valves to the side of the combustion chamber.
Installing valves
Notice
Valve grinding paste not removed
Risk of damage to sealing face on intake valve
-
Remove all valve grinding paste fully after grinding.