Installing the catalytic converter of 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 EXHAUST SYSTEM .
Refer to REMOVING THE ACOUSTIC COVER .
Refer to REMOVING LEFT INTAKE SILENCER HOUSING .
Refer to REMOVING RIGHT INTAKE SILENCER HOUSING .
Refer to REMOVING THE LAMBDA OXYGEN SENSOR .
Refer to REMOVING THE LEFT LAMBDA OXYGEN SENSOR .
Refer to REMOVING THE LEFT INTAKE SILENCER BRACKET .
Refer to REMOVING UPPER HEAT SHIELD .
Refer to REMOVING TRAILING LINK AT SPRING BOLT .
Refer to REMOVING THE LEFT UNFILTERED-AIR DUCT .
Refer to REMOVING COVER FOR THE DME CONTROL UNIT ON LEFT .
Refer to REMOVING THE DME CONTROL UNIT FOR CYLINDERS 5 TO 8 .
Refer to REMOVING THE HOLDER FOR THE DME CONTROL UNIT ON THE LEFT .
Refer to REMOVING THE LEFT OXYGEN SENSOR MONITOR .

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).

Replace seals on exhaust turbocharger.
Parts: Seals
Guide in and install the catalytic converter (1) for cylinders 5 to 8 in the arrow direction.
Connect the catalytic converter (1) for cylinders 5 to 8 to the exhaust turbocharger.

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Guide in and install the catalytic converter (1) for cylinders 1 to 4 in the arrow direction.
Connect the catalytic converter (1) for cylinders 1 to 4 to the exhaust gas turbocharger.

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Replace clamps (1) and (2).
Parts: Clamps

Mount clamps (1) and (2) and tighten.

The circlips (1) and (2) must be mounted with the screw connection to the inside.

TIGHTENING TORQUE SPECIFICATIONS

Catalytic converter to exhaust turbocharger
cl Replace clamp after disassembly.	Tightening torque	14 Nm

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Install holder (4).

Tighten down screws (1).

TIGHTENING TORQUE SPECIFICATIONS

Catalytic converter on cylinder head/cylinder head cover/holder
M8x20	tightening torque	21 Nm

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Tighten down screws (2).

TIGHTENING TORQUE SPECIFICATIONS

Catalytic converter on cylinder head/cylinder head cover/holder
M8x20	tightening torque	21 Nm

Tighten down screw (3).

TIGHTENING TORQUE SPECIFICATIONS

Catalytic converter on cylinder head/cylinder head cover/holder
M8x20	tightening torque	21 Nm

Install holder (4).

Tighten down screws (1).

TIGHTENING TORQUE SPECIFICATIONS

Catalytic converter on cylinder head/cylinder head cover/holder
M8x20	tightening torque	21 Nm

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Tighten down screws (2).

TIGHTENING TORQUE SPECIFICATIONS

Catalytic converter on cylinder head/cylinder head cover/holder
M8x20	tightening torque	21 Nm

Tighten down screw (3).

TIGHTENING TORQUE SPECIFICATIONS

Catalytic converter on cylinder head/cylinder head cover/holder
M8x20	tightening torque	21 Nm

Feed in left heat shield (2) and connect to the other heat shields.

Tighten top screw (1) heat shield.

TIGHTENING TORQUE SPECIFICATIONS

Heat protection plate
M6x16	tightening torque	10 Nm

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Connect heat shield (2) with the lower heat shield.

Tighten bottom screw (1) heat shield.

TIGHTENING TORQUE SPECIFICATIONS

Heat protection plate
M6x16	tightening torque	10 Nm

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Thread in right heat shield (2) and connect with the other heat shield.

Tighten top screw (1) heat shield.

TIGHTENING TORQUE SPECIFICATIONS

Heat protection plate
M6x16	tightening torque	10 Nm

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Connect heat shield (2) with the lower heat shield.

Tighten bottom screw (1) heat shield.

TIGHTENING TORQUE SPECIFICATIONS

Heat protection plate
M6x16	tightening torque	10 Nm

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Partially installing the catalytic converter for cylinders 5 to 8

WARNING: Hot exhaust system .
Risk of burning!

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

Mount the catalytic converter for the cylinders 1 to 4 on the holder.
Replace screws (1).
Parts: Screws

Tighten down screws (1).

TIGHTENING TORQUE SPECIFICATIONS

Catalytic converter to holder
M8x20 Replace screw.	tightening torque	19 Nm

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Mount the catalytic converter for cylinders 5 through 8 on the holder.
Replace nuts (1).
Parts: Nuts

Tighten nuts (1).

TIGHTENING TORQUE SPECIFICATIONS

Catalytic converter to holder
M8 Nut Replace nut.	tightening torque	23 Nm

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Feed in the thrust field (4) in the area (5) of the wheel arch trim panel and position it on the front subframe.
Replace the bolts (arrows).
Parts: Screws

Tighten screws (arrows).

TIGHTENING TORQUE SPECIFICATIONS

Thrust field to front axle support
M10 Replace screws.	Joining torque	56 Nm
	Angle of rotation	90°

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Tighten down screws (3).

TIGHTENING TORQUE SPECIFICATIONS

Cover, steering unit
Thermoplastic hexagon screw	Tightening torque	2.6 Nm

Tighten down screws (2).

TIGHTENING TORQUE SPECIFICATIONS

Wheel arch cover
Thermoplastic hexagon screw	Tightening torque	2.6 Nm
Plastic nut	Tightening torque	2.6 Nm

Tighten down screws (1).

TIGHTENING TORQUE SPECIFICATIONS

Undershield/frame
Hexagon screw	tightening torque	3 Nm