Removing Starter Catalyst on Cylinder Bank 1 - 4

Removing And Installing Starter Catalyst







CAUTION:
Danger of burns.
- Exhaust system can be very hot.
- Only remove the exhaust system when it has cooled down.
- Wear protective gloves.


Removing starter catalyst on cylinder bank 1 - 4 - Cayenne Turbo (M48/50)

No. 1 - 16:

No. 17 - 23:

NOTE: Observe the most important working regulations and warning notes.

1. Remove wheel.
2. Remove engine compartment cover over the oxygen sensor plugs.
3. Disconnect the two oxygen sensor plugs (black) on the right of the water splash panel and unclip the cables from the holders.







4. Remove main catalytic converter.
5. Unscrew the hexagon-head bolt of the side catalytic converter holder -arrow- and carefully pull through the oxygen sensor cable in a downward direction.







6. Undo five fastening nuts to the turbocharger.







7. Remove starter catalyst.
8. Remove flange seals and replace them with new ones.