Central bolt, cylinders 5-8, exhaust

Preliminary work 

• Refer to REMOVING THE ACOUSTIC COVER .
• Refer to REMOVING INTAKE SILENCER HOUSING .
• Refer to REMOVING FAN COWL .
• Refer to REMOVING THE LEFT UNFILTERED-AIR DUCT .
• Refer to REMOVING THE COOLANT EXPANSION TANK FOR THE LOW-TEMPERATURE COOLANT CIRCUIT .
• Refer to REMOVING LEFT CHARGE AIR COOLER .
• Refer to REMOVING RIGHT CHARGE AIR COOLER .
• Refer to REMOVING LEFT CLEAN AIR PIPE .
• Refer to REMOVING THE CONNECTING SUPPORT FROM THE TUNNEL .
• Refer to IF INSTALLED: REMOVE THE TORSION STRUT ON THE RIGHT AND LEFT WHERE REQUIRED .
• Refer to REMOVING THE COVER OF THE ENGINE COMPARTMENT AT THE REAR LEFT .
• Refer to REMOVING THE COVER OF THE REAR RIGHT ENGINE COMPARTMENT .
• Refer to LOOSENING THE VACUUM LINE .
• Refer to REMOVING VACUUM PUMP .
• Refer to REMOVING ALL LEFT IGNITION COILS .
• Refer to REMOVING THE HIGH-PRESSURE RAIL ON THE LEFT .
• Refer to REMOVING INJECTORS .
• Refer to REMOVING THE ALTERNATOR .
• Refer to RELEASING THE OIL FEED LINE FROM THE EXHAUST TURBOCHARGER OF CYLINDERS 5 TO 8 .
• Refer to RELEASING THE OIL FEED LINE FROM THE EXHAUST TURBOCHARGER OF CYLINDERS 5 TO 8 .
• Refer to RELEASING THE BANJO BOLT FROM THE COOLANT RETURN LINE ON THE EXHAUST TURBOCHARGER FOR CYLINDERS 5 TO 8 .
• Refer to DETACH OIL RETURN LINE FROM THE OIL RETURN COVER OF CYLINDERS 5 TO 8 .
• Refer to DETACHING THE COOLANT FEED LINE ON THE EXHAUST TURBOCHARGER FOR CYLINDERS 5 TO 8 .
• Refer to RELEASING THE BANJO BOLT FOR THE COOLANT FEED LINE ON THE EXHAUST TURBOCHARGER FOR CYLINDERS 5 TO 8 .
• Refer to RELEASING THE OIL FEED LINE FROM THE EXHAUST TURBOCHARGER OF THE CYLINDERS 1 TO 4 .
• Refer to REMOVING EXHAUST TURBOCHARGER FOR CYLINDERS 5 TO 8 .
• Refer to LOOSEN THE BANJO BOLT FOR THE COOLANT RETURN LINE AT THE EXHAUST TURBOCHARGER FOR CYLINDERS 1 TO 4 .
• Refer to LOOSEN OIL FEED LINE FROM EXHAUST TURBOCHARGER OF 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 OF THE COOLANT RETURN LINE AT THE EXHAUST TURBOCHARGER FOR CYLINDERS 1 TO 4 .
• Refer to DETACH THE COOLANT FEED LINE ON 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 RELEASING THE BANJO BOLT FOR THE COOLANT LINE FEED LINE AT THE EXHAUST TURBOCHARGER OF CYLINDERS 1 TO 4 .
• Refer to REMOVING THE EXHAUST TURBOCHARGER FOR THE CYLINDERS 1 TO 4 .
• Refer to REMOVING THE FRONT HEAT PROTECTION .
• Refer to UNSCREW THE SCREW AT THE HEAT SHIELD AT THE FRONT RIGHT .
• Refer to REMOVING THE VANOS CENTRAL VALVE .
• Refer to SCREW CONNECTION OF CYLINDER HEAD COVER, LEFT CYLINDERS 5 TO 8 .
• Refer to REMOVING THE CONNECTING BRACKET TOWARDS THE RADIATOR .
• Refer to LOOSENING THE TOP LEFT TIMING CASE COVER .
• Refer to REMOVING THE CHAIN TENSIONER OF CYLINDERS 5 TO 8 .
• Refer to CHECKING THE TIMING OF CYLINDERS 5 TO 8 .

• Loosen the central bolt of the intake adjuster (2).

Courtesy of BMW OF NORTH AMERICA, INC.