Exhaust System: Service and Repair

18 00 020 Removing and installing complete exhaust system (N55)

Special tools required:







WARNING:
Risk of burning.
Only perform this repair work after engine has cooled down.
Danger of injury.
Removal of the exhaust system must be carried out with the assistance of a second person.







Necessary preliminary tasks:
- F12 only:
Remove trailing links.







Support exhaust system with special tool 31 2 220.







Release clamp (1).
Tightening torque 18 31 1AZ.







Release screws (1).
Tightening torque 18 31 4AZ.
Only if auxiliary heating fitted. Release screw (2) on metering pump.
Tightening torque 18 31 5AZ.
Release screws (3) on underbody panelling.
Remove reinforcement plate (4).







Picture shows the left side, the procedure for the right side is identical.
Slacken nut (1).
Tightening torque 18 20 3AZ.







Picture shows the left side, the procedure for the right side is identical.
Slacken nut (1).
Tightening torque 18 31 3AZ.







Slacken nut (1).
Tightening torque 18 31 3AZ.
Lower and remove exhaust system with assistance of a second person.







Installation note:
Check rubber mount for damage.
If necessary, replace damaged rubber mounts.
Check exhaust system for leak tightness.