Replacing the rear silencer

Preliminary work 

• Refer to ADJUSTING THE EXHAUST FLAP SERVOMOTORS INTO INSTALLATION POSITION .
• Refer to REMOVING THE REAR DIFFUSER .

Replacing the rear silencer 

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• Unlock connector (1).
• Disconnect the connector (1) of the exhaust flap (2).

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• Unlock connector (1).
• Disconnect the connector (1) of the exhaust flap (2).

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  NOTE: RISK OF DAMAGE 
  Careless handling of tools and sharp-edged components  .
  Scratches, surface damage  .

  • Protect working area.
  • Handle tools and components carefully.

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• Mask off the bordering areas of the rear silencer for the bumper cover with adhesive tape  .
  CONSUMABLE SPECIFICATION
  
  

  adh  .

  51717901759

• If the separation point (1) is not marked by a grain (2) in the pipe, then determine the separation point (1) by means of the length of the pipe on the new rear silencer.
• Apply the separation point (1) to faulty rear silencer and mark it.
• With the help of a second person, secure the front silencer to prevent it from falling down.
• Cut through exhaust pipes at the marked point with a suitable tool.
• Loosen nuts (1).
• Guide out and remove rear silencer with assistance of a second person.

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  Remounting the rear silencer 

• Loosen screws (1).
• Remove the controller drive for exhaust flap (2)

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• Position the heat shield (2).
• Position the controller drive for exhaust flap (3).
• Make sure that the shaft of the controller drive for exhaust flap (3) and the shaft of the exhaust flap in the area (1) interlock correctly.

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• Position the screws (1) on the controller drive for exhaust flap (2).
• Tighten down screws (1).
  TIGHTENING TORQUES SPECIFICATION
  
  

  Actuator for the exhaust flap
  M6x16	tightening torque	8.5 Nm

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• Remove the rubber mount (2) from the bars (1) of the former rear silencer.
• Install the rubber mount (2) on the bars (1) of the rear silencer.

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• Position the rear silencer (1) with the help of a second person.
• Replace the circlips (2).

  Parts:  Clamps

• Slide circlips (2) onto the center silencer.
• Adjust the rear silencer (1) on the center silencer (3).

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• The openings of the circlips (2) must point outwards.
• Tighten nuts in area (1) of the circlips (2).
  TIGHTENING TORQUES SPECIFICATION
  
  

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  Nuts	Tightening torque	45 Nm

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• Connect connector (1).
• Lock connector (1) to exhaust flap (2).

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• Connect connector (1).
• Lock connector (1) to exhaust flap (2).

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Follow-up work 

• Refer to INSTALLING THE REAR DIFFUSER .