The illustrations in this service information are used for different model years and/or models. Some variation may occur. However, the essential information in the illustrations is always correct.
Preparatory work Removing components
Remove:
the nut where the three-way catalytic converter (TWC) and exhaust system separate
Note! Use rust solvent or similar on the nuts.
the gasket. Separate the exhaust system from the three-way catalytic converter (TWC).
Installing tool
Install:
The tool (1) 999 7085 using a new gasket pressure regulator 999 5544 on tool 999 7085. Adjust the pressure to 0.4 bar.
Cleaning and checking Check
Check the exhaust system by spraying a soap solution on all joints and connections between the cylinder head and the rear heated oxygen sensor (HO2S). Only very small and slow bubbles are permissible.
Finishing Removing tools
Remove:
pressure regulator 999 5544 tool 999 7085.
Installing components
Install:
a new gasket where the exhaust system and three-way catalytic converter (TWC) divide
a new nut for the exhaust system. Tighten. Start the engine. Check for leaks where the threeway catalytic converter (TWC) and the exhaust system divide.
