Removing and Installing Exhaust Manifold

Removing And Installing Exhaust Manifold







Removing exhaust manifold - Cayenne S (type M48/00)

The engine must be removed for this task.
1. Loosen starter catalyst from exhaust manifold. To do this, loosen the three fastening screws.







2. Unclip the oxygen sensor cable from all holders.
3. Unscrew the 12 fastening nuts in the sequence shown below.







Installing exhaust manifold - Cayenne S (type M48/00)
1. Clean sealing surfaces. The surfaces must be free from foreign objects.
2. Use a new seal. The seal must be positioned so that the part number is visible from the outside.
3. Push the manifold across the studs and fit it with 12 new fastening nuts. The fastening nuts are tightened in two stages as shown below.

Step Tightening torque [Nm] (ftlb.)
I 25(19)
II 33(24)







4. Clip oxygen sensor cable into the holders.
5. Fit starter catalysts with new gaskets. Tightening torque for screws 23 Nm (17 ftlb.).







6. Install engine.

Replacing studs
1. Turn and counter two nuts on the relevant studs.
2. Unscrew exhaust manifold studs.
3. Screw in new studs. The stud must be screwed in until dimension -A- is obtained.







Engine type Dimension A
M48/00 25±0.5 mm
M48/50 24 - 1 mm