Removing and Installing/Replacing Catalytic Exhaust-Gas Converter for Cylinders 1-3

18 32 050 - Removing and installing/replacing catalytic exhaust-gas converter for cylinders 1-3 (N54)





Warning!
Scalding hazard!
Only perform these tasks after exhaust system has cooled down.





Necessary preliminary tasks:
- Remove exhaust system Removing and Installing / Replacing Front Underbody Protection.
- Remove underbody protection Removing and Installing/Replacing Right Output Shaft Bearing Block
- Remove cable holder on side of transmission for control sensor/monitor sensor
- In all-wheel-drive vehicles: Remove right bearing block Replacing Both Lambda Oxygen Control Sensors





Note:
The oxygen sensors are in danger of being damaged when the exhaust manifolds are removed and installed.
Remove control sensor, cylinders 1 to 3 Replacing Both Lambda Oxygen Monitor Sensors
Remove monitor sensor, cylinders 1 to 3 18 20 Exhaust System Suspension





Unscrew nuts.
Tightening torque 18 20 2AZ 18 31 Exhaust Pipe with Catalytic Converter/Complete System.





Release screws.
Remove holder (1).





Unfasten clip. In so doing, secure catalytic converter (1) against falling out.
Remove catalytic converter (1).

Installation Note:
Clean sealing face and replace seal.
Tightening torque 18 00 3AZ.