18 10 090 Removing and installing center silencer (N57 D30U/O 0/1)

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Special tools required:

31 2 220

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.

Necessary preliminary work:

Remove UNDERBODY PANELLING at rear

Support exhaust system with special tool 31 2 220.

Fig 1: Supporting Exhaust System Using Special Tool (31 2 220)

Courtesy of BMW OF NORTH AMERICA, INC.

If fitted:

Release screws (1).

Remove heat shield (2).

Fig 2: Identifying Heat Shield And Screws

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F01, F02, F07 only:

Release screws (1).

Tightening torque 18 20 6AZ .

Only if auxiliary heating fitted. Release screw (2) on metering pump.

Tightening torque 18 20 7AZ .

Release screws (3) on underbody panelling.

Remove reinforcement plate (4).

Fig 3: Identifying Reinforcement Plate And Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (1).

Tightening torque 18 20 6AZ .

Only if auxiliary heating fitted. Release screw (2) on metering pump.

Tightening torque 18 20 7AZ .

Release screws (3) on underbody panelling.

Remove reinforcement plate (4).

Fig 4: Identifying Reinforcement Plate, Underbody Panelling And Metering Pump Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Release nut (1) on clamp.

Tightening torque 18 31 1AZ .

Fig 5: Identifying Exhaust System Nut On Clamp

Courtesy of BMW OF NORTH AMERICA, INC.

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

Fig 6: Identifying Center Silencer Marked Point