Installing upper catalytic converter near engine for bank 2

• Replace V-ribbon clips (1).

  Parts:  V-ribbon clips

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• Replace seals (1).

  Parts:  Seals

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• Position the catalytic converter (1) near the engine.
• Position V-clip (3).
• Tighten down screw (2).
  TIGHTENING TORQUE SPECIFICATION
  
  

  Catalytic converter to exhaust turbocharger
  V-band clamp Replace V-band clamp.	Tightening torque	14 Nm

  Courtesy of BMW OF NORTH AMERICA, INC.

• Tighten down screws (1).
  TIGHTENING TORQUE SPECIFICATION
  
  

  Catalytic converter to cylinder head
  screw	Tightening torque	21.4 Nm

  Courtesy of BMW OF NORTH AMERICA, INC.

• Tighten down screws (1).
  TIGHTENING TORQUE SPECIFICATION
  
  

  Catalytic converter to cylinder head
  screw	Tightening torque	21.4 Nm

  Courtesy of BMW OF NORTH AMERICA, INC.

• Slide the V-clip (1) towards the bottom onto the catalytic converter near engine.
• Position the V-clip (1) on the catalytic converter near engine.
• Tighten down screw (2).
  TIGHTENING TORQUE SPECIFICATION
  
  

  Top catalytic converter to bottom catalytic converter
  V-band clamp Replace V-band clamp.	Tightening torque	14 Nm

  Courtesy of BMW OF NORTH AMERICA, INC.

Checking the screw connection of the V-ribbon clips 

• Replace the V-ribbon clip (1).

  Parts:  V-ribbon clip

Courtesy of BMW OF NORTH AMERICA, INC.

Check 

• Check if the screw connection of the V-band clamp is too loose.

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Result 

» The screw connection is too slack. If a gap can be seen between the ends of the V ribbon clips.

Measure

• Loosen the screw and tighten again.

Check 

• Check if the screw connection of the V-band clamp is too tight.

Courtesy of BMW OF NORTH AMERICA, INC.

Result 

» The screw connection is too slack. The ends of the V-ribbon clip are not positioned parallel.

Measure

• Release the screw and replace the V-ribbon clip.

  Parts:  V-ribbon clip

• Make sure that the ends of the V-band clamp are parallel to each other.

Courtesy of BMW OF NORTH AMERICA, INC.

Follow-up work 

• Refer to INSTALLING HEAT SHIELD, TOP .
• Refer to INSTALLING THE LAMBDA OXYGEN SENSOR FOR CYLINDERS 1 TO 4 .
• Refer to INSTALLING THE LAMBDA OXYGEN SENSOR FOR CYLINDERS 5 TO 8 .
• Refer to INSTALLING THE CROSSING OF THE TRANSMISSION WIRING HARNESS .
• Refer to INSTALLING THE COOLANT EXPANSION TANK FOR THE LOW-TEMPERATURE .
• Refer to INSTALLING BRACKET FOR RIGHT INTAKE SILENCER .
• Refer to INSTALLING OIL FILLER NECK .
• Refer to FASTENING THE ENGINE VENTILATION LINE OF CYLINDER BANK 1 .
• Refer to INSTALLING RIGHT INTAKE SILENCER HOUSING .
• Refer to INSTALLING THE LEFT INTAKE SILENCER BRACKET .
• Refer to INSTALLING THE OXYGEN SENSOR MONITOR FOR CYLINDERS 5 TO 8 .
• Refer to FASTENING THE ACTIVATED-CHARCOAL FILTER LINE .
• Refer to FASTENING THE ENGINE VENTILATION LINE OF CYLINDER BANK 2 .
• Refer to INSTALLING LEFT INTAKE SILENCER HOUSING .
• Refer to INSTALLING ACOUSTIC COVER .