18 12 031 Replacing rear silencer (N55)
WARNING: This page is about a different car, the 2013 BMW X5, 2012 BMW X5, and 2011 BMW X5. However, it is still accessible from the selected car via links, so may be relevant.
Special tools required:
WARNING:
Risk of burning!
This repair work may only be carried out on an exhaust system which has cooled down.
This repair work may only be carried out on an exhaust system which has cooled down.
Support rear silencer with special tool 31 2 220 and a suitable universal lifter.
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 pipes 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 pipes at marked point with a suitable tool.
Release screw (1).
Tightening torque: 18 20 3AZ .
Pull off vacuum line (1).
Picture shows the right-hand side; the procedure for the left side-hand is identical.
Unscrew nuts (2).
Tightening torque: 18 31 4AZ .
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 3AZ .
NOTE:
Check rubber mount for damage.
Replace damaged rubber mount.
Check exhaust system for leak tightness.
Replace damaged rubber mount.
Check exhaust system for leak tightness.