Install chain tensioner

• Use a suitable tool to tighten the chain tensioner.

Courtesy of BMW OF NORTH AMERICA, INC.

• Drain the oil chamber in the chain tensioner when reusing the chain tensioner.
• Place the chain tensioner on a level support, slowly compress in the arrow direction and relieve it.
• Catch and dispose of emerging engine oil.
• Repeat the procedure 2x.

  Courtesy of BMW OF NORTH AMERICA, INC.

• Replace the sealing sleeve (1)  .

  Parts:  Sealing sleeve

• Guide in and install the sealing sleeve (1)  on the chain tensioner (2)  .

  Courtesy of BMW OF NORTH AMERICA, INC.

• Guide in and install the chain tensioner (1)  .

  Courtesy of BMW OF NORTH AMERICA, INC.

• Tighten the chain tensioner (1)  with standard tools.
  TIGHTENING TORQUE SPECIFICATIONS
  
  

  Chain tensioner to cylinder head
  Chain tensioner	Joining torque	20 Nm
  	Angle of rotation	40°

  Courtesy of BMW OF NORTH AMERICA, INC.

Follow-up work 

• Refer to INSTALLING THE HEAT SHIELD ON THE EXHAUST TURBOCHARGER, TOP .
• Refer to INSTALLING THE OXYGEN SENSOR MONITOR .
• Refer to INSTALLING LAMBDA OXYGEN SENSOR .
• Refer to INSTALLING CLEAN AIR PIPE .
• Refer to INSTALLING ACOUSTIC COVER .
• Refer to INSTALLING SECOND UPPER BULKHEAD .
• Refer to INSTALLING THE RIGHT WINDSHIELD PANEL COVER .
• Refer to INSTALLING THE BATTERY COVER .
• Refer to INSTALLING THE LEFT WINDSHIELD PANEL COVER .
• Refer to INSTALLING THE REAR HOOD SEAL .
• Refer to INSTALLING LEFT AND RIGHT WIPER ARM .