Removing and Installing/Replacing Rear Muffler

18 12 031 Replacing rear silencer (N63)

Special tools required:





Warning!
Risk of burns!
Only perform these tasks after exhaust system has cooled down.





Support rear silencer with special tool 31 2 220 and a suitable universal lifter.





Note:
If the separation point is not marked by a punch mark on the pipe, determine the separation point by means of the pipe length on the new rear silencer.

Carry over separation point to faulty rear silencer (3) and mark out.

Secure rear silencer against falling off.

Cut through exhaust pipes at marked point with a suitable tool.





Picture shows the left side, the procedure for the right side is identical.

Release screw (1).

Tightening torque 18 20 3AZ.





Picture shows the left side, the procedure for the right side is identical.

Unscrew nuts (1).

Tightening torque 18 20 4AZ.

Detach hose (2) from vacuum unit and release at clamp (3).

Lower and remove rear silencer with assistance of a second person.





Installation Note:
Install, adjust new rear silencer and connect with hose clamp.

Center clamp and tighten down.

Tightening torque 18 31 5AZ.

The procedure is identical on both sides.





Installation Note:
Align both exhaust tailpipes (1) of rear silencer in each case centrally to recesses in rear apron.





Note:
Check rubber mount for damage.

Replace damaged rubber mount.

Check exhaust system for leaks.