Close the oil holes on the exhaust turbocharger

Preliminary work 

• Refer to REMOVING THE ACOUSTIC COVER .
• Refer to REMOVING INTAKE SILENCER HOUSING .
• Refer to REMOVING THE RIGHT UNFILTERED-AIR DUCT .
• Refer to REMOVING ENGINE VENTILATION LINE .
• Refer to REMOVING RIGHT CLEAN AIR PIPE .
• Refer to REMOVING FAN COWL .
• Refer to DRAINING THE COOLANT FOR THE CHARGE AIR COOLER .
• Refer to REMOVING RIGHT CHARGE AIR COOLER .
• Refer to IF INSTALLED: REMOVE THE TORSION STRUT ON THE RIGHT AND LEFT WHERE REQUIRED .
• Refer to RELEASING THE CHARGE AIR HOSE FROM THE EXHAUST TURBOCHARGER OF THE CYLINDERS 1 TO 4 .
• Refer to RELEASING THE OIL FEED LINE FROM THE EXHAUST TURBOCHARGER OF THE CYLINDERS 1 TO 4 .
• Unscrew the banjo bolt (1). Release the oil feed line (2) and set aside.

  Courtesy of BMW OF NORTH AMERICA, INC.

• Refer to LOOSEN THE BANJO BOLT FOR THE COOLANT RETURN LINE AT THE EXHAUST TURBOCHARGER FOR CYLINDERS 1 TO 4 .
• Refer to REMOVING THE OIL RETURN LINE FROM THE OIL RETURN COVER OF CYLINDERS 1 TO 4 .
• Refer to DETACH THE COOLANT FEED LINE ON THE EXHAUST TURBOCHARGER FOR CYLINDERS 1 TO 4 .

• Replace O-rings.

  Parts  : O-ring

• Close the return orifices with the seal plugs 2 364 711  .

Courtesy of BMW OF NORTH AMERICA, INC.