Removing the catalytic converter for cylinders 5 to 8

Precondition

Ignition Is switched off.
WARNING:
Hot surfaces .
Risk of burning!
- Perform all work only on components that have cooled down.

Preliminary work

Refer to REMOVING THE LEFT AND RIGHT UNDERSHIELD (TANK COVER) .
Refer to REMOVING THE REAR LEFT AND RIGHT TENSIONING STRUT .
Refer to REMOVING THE LEFT AND RIGHT REAR DIFFUSER .
Refer to REMOVING THE STIFFENING PLATE .
Refer to REMOVING EXHAUST SYSTEM .
Refer to REMOVING THE ACOUSTIC COVER .
Refer to REMOVING THE LEFT OXYGEN CONTROL SENSOR (Lambda).
Refer to REMOVING RIGHT OXYGEN CONTROL SENSOR (Lambda).
Refer to REMOVING SUSPENSION STRUT BRACE .
Refer to REMOVING RIGHT SUSPENSION STRUT BRACE .
Refer to REMOVING INTAKE SILENCER HOUSING .
Refer to REMOVING THE RIGHT TENSION STRUT ON THE SHOCK TOWER .
Refer to REMOVING COVER FOR THE RIGHT DME CONTROL UNIT .
Refer to REMOVING THE RIGHT UNFILTERED-AIR DUCT .
Refer to REMOVING THE RIGHT OXYGEN SENSOR MONITOR .
Refer to REMOVING LEFT OXYGEN SENSOR MONITOR .
Refer to REMOVING THE RIGHT-HAND ENGINE VENTILATION LINE AND THE CRANKCASE VENTILATION INTAKE PIPE .
Refer to REMOVING THE LEFT ENGINE VENTILATION LINE .
Refer to REMOVING UPPER HEAT SHIELD .
Refer to RELEASING SCREW BETWEEN THE LEFT AND RIGHT HEAT SHIELD .
Refer to REMOVING THE LEFT HEAT SHIELD .
Refer to REMOVING RIGHT HEAT SHIELD .

WARNING: Hot exhaust system .
Risk of burning!

Any work must exclusively be carried out with an exhaust system that has cooled down.

NOTE: RISK OF DAMAGE
Damage to the gasoline particulate filter .
Forcibly removing, installing or dropping the gasoline particulate filter down will damage it .

Remove and install the gasoline particulate filter without damaging it and without applying external force.
Avoid impacts/knocks to the gasoline particulate filter (e.g. by tools, falling down, hard contact with base).

NOTE: TECHNICAL INFORMATION
In order to be able to remove the catalytic converter for cylinders 5 to 8, the catalytic converter for cylinders 1 to 4 also needs to be removed.

Loosen circlip (1) and remove.
Loosen circlip (2) and remove.

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Loosen screws (1).
Loosen screws (2).
Loosen screw (3).
Remove holder (4).

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Loosen screws (1).
Loosen screws (2).
Loosen screw (3).
Remove holder (4).

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Remove the catalytic converter (1) for the cylinders 1 to 4 in arrow direction.

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Unscrew and remove the catalytic converter (1) for the cylinders 1 to 4 in arrow direction.

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Remove the catalytic converter (1) for the cylinders 5 to 8 in arrow direction.

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Unscrew and remove the catalytic converter (1) for the cylinders 5 to 8 in arrow direction.

Courtesy of BMW OF NORTH AMERICA, INC.