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Home >> Mini >> 2010 >> Cooper S, 2D Hatchback, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 92 (Exhaust System - Repair - R55 (N14)) >> Mufflers, Petrol >> 18 12 040 Removing and installing/replacing front muffler (N12, N14)

18 12 040 Removing and installing/replacing front muffler (N12, N14)

WARNING: This page is about a different variant/trim than selected.

Special tools required: 

WARNING: Scalding hazard!
Only perform these tasks after exhaust system has cooled down.

Unfasten clamp.

Tightening torque 22-28 N.m

Fig 1: Locating Clamp
G05528620Courtesy of BMW OF NORTH AMERICA, INC.

Disconnect exhaust pipe with suitable tool at marked point and deburr. Interface (1) for front silencer is designated by a notch in the pipe.

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.
IMPORTANT: Risk of damage! Secure exhaust pipe of front silencer against falling down with assistance of a second person.
Fig 2: Identifying Cutting Line For Front Muffler
G05528621Courtesy of BMW OF NORTH AMERICA, INC.

Spray rubber mount (1) with antiseize agent and detach from exhaust pipe (2).

NOTE: Check rubber mount for damage, replace if necessary.

Lower and remove front muffler with assistance of a second person.

Fig 3: Identifying Rubber Mount And Exhaust Pipe
G05528623Courtesy of BMW OF NORTH AMERICA, INC.

Installation: 

Connect rear muffler to front muffler by means of a clamp.

Align rear muffler to rear apron.

Align clamp and tighten down.

Tightening torque 45 N.m

Fig 4: Identifying Clamp
G05528624Courtesy of BMW OF NORTH AMERICA, INC.
NOTE: Check exhaust system for leaks.