Installing exhaust system

Install exhaust system

CAUTION: Component with heavy weight.
Injury hazard!

Note component's center of gravity.
Support component using a jack.
Secure component against falling off the jack.

CAUTION: Heavy component.
Heavy components can lead to injury or damage.

Remove and install heavy components with the aid of another person/other persons.

CAUTION: Grinding dust from grinding of components.
Hazardous to health!

Directly draw off the grinding dust.
Ensure adequate ventilation.
Conduct all work in appropriate personal protective equipment only.

NOTE: TECHNICAL INFORMATION
Check the exhaust system for tightness after installation.

NOTE: TECHNICAL INFORMATION
Mount the exhaust system in a de-energized state, following the tightening sequence from the rear silencer towards the exhaust manifold.

CAUTION: Shavings resulting from sawing or grinding components.
Injury hazard!

Conduct all work in appropriate personal protective equipment only.
Wear safety goggles and hand protection.

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Version without a gasoline particulate filter:
Open the weld seam (1) with a conventional tool.
Remove the previous left and right clamps (2).
NOTE: Schematic diagram is for example purposes. Some parts may differ in certain details.
Check all rubber mounts (1) of the exhaust system for damage and replace, if necessary.

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Replace nuts (1).
Parts: Nuts

Tighten the nuts (1) at left on the rear silencer.

TIGHTENING TORQUES SPECIFICATION

Rear silencer to bumper bracket/body
Nut M8 Replace nut.	Tightening torque	19 Nm

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Replace nuts (1).
Parts: Nuts

Tighten the nuts (1) at right on the rear silencer.

TIGHTENING TORQUES SPECIFICATION

Rear silencer to bumper bracket/body
Nut M8 Replace nut.	Tightening torque	19 Nm

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Replace nut (1).
Parts: Nut

Tighten the nut (1) at left on the rear silencer.

TIGHTENING TORQUES SPECIFICATION

Rear silencer to bumper bracket/body
Nut M8 Replace nut.	Tightening torque	19 Nm

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Replace nut (1).
Parts: Nut

Tighten the nut (1) at right on the rear silencer.

TIGHTENING TORQUES SPECIFICATION

Rear silencer to bumper bracket/body
Nut M8 Replace nut.	Tightening torque	19 Nm

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Replace the screw (1).
Parts: Screw

Tighten the screw (1) to the left of the rear axle support.

TIGHTENING TORQUES SPECIFICATION

Exhaust system to rear axle carrier
M8x25 Replace screw.	tightening torque	28 Nm

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Replace the screw (1).
Parts: Screw

Tighten the screw (1) to the right of the rear axle support.

TIGHTENING TORQUES SPECIFICATION

Exhaust system to rear axle carrier
M8x25 Replace screw.	tightening torque	28 Nm

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Feed in and install the exhaust system with the help of 3 people.
Version without a gasoline particulate filter:
If necessary, replace clamp (1).

Parts: cl
Connect exhaust system to catalytic converters.

Tighten the clamp (1) on the left.

TIGHTENING TORQUES SPECIFICATION

Exhaust system/front silencer to catalytic converter
cl. If necessary, replace clamp.	tightening torque	55 Nm

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Version without a gasoline particulate filter:

Tighten the clamp (1) on the right.

TIGHTENING TORQUES SPECIFICATION

Exhaust system/front silencer to catalytic converter
cl. If necessary, replace clamp.	tightening torque	55 Nm

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Version without a gasoline particulate filter:
Replace seal (1) on left catalytic converter.

Parts: Gasket

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Version without a gasoline particulate filter:
Replace seal (1) on right catalytic converter.

Parts: Gasket

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Version with a gasoline particulate filter:
Guide in gasoline particulate filter with three persons.
Connect gasoline particulate filter with the catalytic converters.

Tighten nuts (1).

Parts: Nuts

TIGHTENING TORQUES SPECIFICATION

Exhaust system/gas particulate filter to cat
M8 Nut Replace nuts.	tightening torque	19 Nm

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Version with a gasoline particulate filter:

Tighten nuts (1).

Parts: Nuts

TIGHTENING TORQUES SPECIFICATION

Exhaust system/gas particulate filter to cat
M8 Nut Replace nuts.	tightening torque	19 Nm

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Connect the connector (1) to the actuator for the exhaust flap on the left and lock it audibly.

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Connect the connector (1) to the actuator for the exhaust flap on the right and lock it audibly.

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Version with a gasoline particulate filter:

Screw in and tighten exhaust temperature sensor (1) before the right gasoline particulate filter.

TIGHTENING TORQUES SPECIFICATION

Exhaust-gas temperature sensor to exhaust system
tightening torque		30 Nm

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Version with a gasoline particulate filter:

Screw in and tighten exhaust temperature sensor (1) before the left gasoline particulate filter.

TIGHTENING TORQUES SPECIFICATION

Exhaust-gas temperature sensor to exhaust system
tightening torque		30 Nm

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Version with a gasoline particulate filter:

Screw in and tighten exhaust temperature sensor (1) after the left gasoline particulate filter.

TIGHTENING TORQUES SPECIFICATION

Exhaust-gas temperature sensor to exhaust system
tightening torque		30 Nm

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Version with a gasoline particulate filter:
Screw in and tighten exhaust temperature sensor (1) after the right gasoline particulate filter.

TIGHTENING TORQUES SPECIFICATION

Exhaust-gas temperature sensor to exhaust system
tightening torque		30 Nm

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Install the connecting supports on the tunnel

Version A:

Install the connecting support (2) on the tunnel.

Tighten screws (arrows).

Tighten down screws (1).

TIGHTENING TORQUES SPECIFICATION

Connecting support to tunnel
M8x25 screw	tightening torque	20 Nm
Screw	tightening torque	3 Nm

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Version B:
Install the connecting support (2) on the tunnel.

Tighten screws (arrows).

Tighten down screws (1).

TIGHTENING TORQUES SPECIFICATION

Connecting support to tunnel
M8x25 screw	tightening torque	20 Nm
Screw	tightening torque	3 Nm

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Install both trim pieces for the exhaust tailpipe

NOTE: Description is for left component only. Procedure on the right side is identical.

Install the trim for the exhaust tailpipe (2).
Tighten the screws (1).

TIGHTENING TORQUES SPECIFICATION

Exhaust cover on guide
Hexagon screw	Tightening torque	2.7 Nm

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Install the trim on the rear bumper panel

NOTE: TECHNICAL INFORMATION
Detents, guides and mounting elements must not be damaged or missing.

Install the trim (1) and clip it into the bumper cover (2).

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With SA715 M Aerodynamic package:
NOTE: TECHNICAL INFORMATION
Detents, guides and mounting elements must not be damaged or missing.
Install the trim (1) and clip it into the bumper cover (2).

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Installing the rear diffuser

Version A:
Install the diffuser (3) and tighten the nuts (2).

Tighten the screws along the dotted line (1).

TIGHTENING TORQUES SPECIFICATION

Diffuser/undershield
Nuts and screws	tightening torque	3 Nm

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Version B:

Feed in and install the diffuser (2).

Tighten the nuts (1) and screws (arrows).

TIGHTENING TORQUES SPECIFICATION

Diffuser/undershield
Nuts and screws	tightening torque	3 Nm

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Version C:
Insert and install the diffuser (1).

Tighten the screws (arrows).

TIGHTENING TORQUES SPECIFICATION

Diffuser/undershield
Nuts and screws	tightening torque	3 Nm

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