Muffler: Service and Repair

18 12 031 Replacing front silencer (N16)







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.







Support exhaust system (1) with a suitable jack (2).
Protect the front and rear silencers from falling down.







NOTE:
If the separation point is not marked by a punch mark in the pipe, determine the separation point by means of the pipe length on the new front silencer.
Carry over separation point to faulty front silencer and mark.
Secure front silencer against falling out.
Cut through exhaust pipes at marked point with a suitable tool.







Release screws (1).
Tightening torque 18 31 9AZ.
Unscrew nuts (4).
Tightening torque 18 31 8AZ.
Remove reinforcement plate (2) and reinforcement strut (3).







Unfasten clamp.
Tightening torque 18 31 5AZ.
Lower front silencer and remove.







Installation note:
Fit front silencer and connect with clamp.
Centre clamp and tighten down.
Tightening torque 18 31 6AZ.







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