Cayenne Titanium (9PA) V8-4.5L (2006)
Valve: Service and Repair
Removing and Installing Exhaust Valve
WM 156219 Removing and installing exhaust valve
Preliminary work
Preliminary work
1. Remove cylinder head.
2. Remove camshafts.
3. Take flat-base tappets out of the cylinder head and lay them on a clean surface, arranged according to cylinders and valves. Do not interchange
components.
Information
Component overview
In the Turbo, the exhaust valve is fitted with internal and external valve springs and adapted concave washers (different to those shown in the figure
below). The exhaust valve in the turbo engine has the same dimensions as the exhaust valve in the naturally aspirated engine; because of the sodium
filling it is lighter however and when obtained as a spare part it features a colored dot to distinguish it. For further details, please see later chapter
entitled "Valve dimensions".
Component overview of valves
1 -
Valve collet (valve key)
2 -
Top spring retainer
3 -
Valve spring
4 -
Spring plate, bottom
5 -
Valve-stem seal
6 -
Valve guide
7 -
Intake positioning ring
8 -
Intake valve
9 -
Exhaust positioning ring
10 -
Exhaust valve
Removing exhaust valve