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Home >> Mini >> 2010 >> Cooper S, 2D Hatchback, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 2702 (Exhaust System - Repair - E90 (N51)) >> 1812 Mufflers >> 1812044 Replacing front muffler (N51) >> Necessary preliminary tasks

Necessary preliminary tasks

WARNING: This page is about a different car, the 2011 BMW 328i, 2010 BMW 328i, and 2009 BMW 328i. However, it is still accessible from the selected car via links, so may be relevant.

Support front muffler with special tool 31 2 220 .

Fig 1: Supporting Front Muffler Using Special Tool 31 2 220
G04774161Courtesy of BMW OF NORTH AMERICA, INC.
NOTE: If the cutting line is not marked by a punch mark in the pipe, determine the cutting line by means of the pipe length on the new front muffler.
Carry over cutting line to faulty front silencer (3) and mark out.
Fig 2: Identifying Rear Muffler Line Cutting Position
G05758989Courtesy of BMW OF NORTH AMERICA, INC.

Cut exhaust pipes at marked points with special tool 00 2 210 and deburr.

Fig 3: Cutting Exhaust Pipes At Marked Points Using Special Tool (00 2 210)
G04742078Courtesy of BMW OF NORTH AMERICA, INC.

Release bolt and remove bracket (1).

Tightening torque 18 20 2AZ .

Fig 4: Locating Bracket Bolt
G05777756Courtesy of BMW OF NORTH AMERICA, INC.

Unfasten screw connection.

Installation: 

Tightening torque 18 20 3AZ .

Fig 5: Locating Bracket Screw
G05476210Courtesy of BMW OF NORTH AMERICA, INC.

Release bolts along line and remove reinforcement plate (1).

Lower front muffler and remove.

Fig 6: Identifying Reinforcement Plate
G05502234Courtesy of BMW OF NORTH AMERICA, INC.

Installation: 

Connect front silencer to rear silencer by means of clamp and align.

Centre clamp and tighten down.

Tightening torque 18 20 8AZ .

Fig 7: Identifying Centre Clamps
G04742081Courtesy of BMW OF NORTH AMERICA, INC.
NOTE: Check exhaust system for leaks.