18 12 031 Replacing rear silencer (N20)
WARNING: This page is about a different variant/trim than selected.
Special tools required:
- 31 2 220
WARNING:
Risk of burning!
Only perform this repair work after the exhaust system has cooled down.
Only perform this repair work after the exhaust system has cooled down.
Support rear silencer with special tool 31 2 220 and a suitable universal lifter and secure against falling out.
Necessary preliminary tasks:
- Remove the REINFORCEMENT PLATE from the rear axle.
- Remove left trailing link on the rear axle.
NOTE:
If the separation point line is not marked by a punch mark in 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 and mark.
Secure rear silencer against falling off.
Cut through exhaust pipe at marked point with a suitable tool.
Carry over separation point to faulty rear silencer and mark.
Secure rear silencer against falling off.
Cut through exhaust pipe at marked point with a suitable tool.
Unfasten nut.
Tightening torque 18 31 3AZ .
Release screw (1).
Tightening torque 18 31 7AZ .
Installation note:
Risk of damage to screw and thread of the retaining plate.
Join bolt (1) exactly. If necessary, brace rear silencer with a jack.
Release nut (1) and remove ground strap.
Detach pressure hose (2).
Pull rubber mounts (3) off holder.
Lower and remove rear silencer.
Installation note:
Connect front silencer to rear silencer by means of clamp and align.
Center clamp and tighten down.
Tightening torque 18 31 4AZ .
NOTE:
Check rubber mount for damage.
Replace damaged rubber mount.
Check exhaust system for leaks.
Replace damaged rubber mount.
Check exhaust system for leaks.