Installing exhaust turbocharger

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• Replace gasket (1).

  Parts:  Gasket

• Install seal (1) so that the part number is visible.

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  NOTE: Do not damage the thermal compensating elements. Disassembly and installation including intermediate storage of the exhaust turbocharger is only permitted with mounted special tool 2 466 919.
• Thermal compensating element of the exhaust turbocharger/exhaust manifold should not be bent or deformed!

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• Thread in exhaust turbocharger from top and position on the trim strip.
• Position the sliding rail (1).
• Install the sliding real (1) so that the part number is visible.

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• Replace nuts (1) to (7).

  Parts:  Nuts

• Tighten nuts in the sequence (1) to (7) in semi-circular pattern.

Fig 1: Exhaust Turbocharger Nuts Tightening Sequence

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• Unscrew the nuts (2) and remove the retainer (1).

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• Unscrew the nuts (2) and remove the retainer (1).

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• Loosen screw (2) and remove holder (1).

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• Turn the clamping lever (1) against the direction of the arrow to release the special tool 2 446 919.

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• Unscrew the bolt (1) and remove the special tool 2 446 919 from the exhaust turbocharger.

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• Be sure to do the initial filling when replacing the exhaust turbocharger.
• Fill the exhaust turbocharger with the matching additive (see applicable BMW parts catalogue).

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• Fill the exhaust turbocharger additive (1) into the bores of the oil feed line.

• Replace screws (2).

  Parts:  Screws

• Position support and tighten with the screw (2).

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• Replace the screw (1).

  Parts:  Screw

• Tighten down screw (1).
  TIGHTENING TORQUES SPECIFICATION
  
  

  Exhaust turbocharger to support
  M8 x 25 Replace screw.	tightening torque	19 Nm

• Replace O-ring.

  Parts:  O-ring

• Position oil feed line on engine block.
• Tighten down screw (1).

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• Connect connectors (1) and lock.

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• Mount and tighten the guide pin (1).

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Follow-up work 

• Refer to INSTALLING THE COOLANT FEED LINE (COOLANT RETURN LINE IS REMOVED) .
• Refer to INSTALLING HEAT SHIELD FOR CYLINDER HEAD COVER .
• Refer to INSTALLING THE FRONT SECTION OF THE COOLANT RETURN LINE .
• Refer to INSTALLING THE OIL RETURNING LINE FOR THE EXHAUST TURBOCHARGER .
• Refer to CONNECTING THE COOLANT LINES FOR THE HIGH-TEMPERATURE COOLANT CIRCUIT .
• Refer to FILLING THE HIGH-TEMPERATURE COOLING SYSTEM WITH THE VACUUM FILLING EQUIPMENT .
• Refer to INSTALLING CATALYTIC CONVERTER .
• Refer to REPLACING THE OXYGEN MONITOR SENSOR .
• Refer to INSTALLING LAMBDA OXYGEN SENSOR .
• Refer to INSTALLING CHARGE AIR LINE .
• Refer to INSTALLING BOTTOM CLEAN AIR PIPE .
• Refer to INSTALLING THE RESONATOR WITH THE TOP CLEAN AIR PIPE .
• Refer to INSTALLING INTAKE SILENCER HOUSING .
• Refer to INSTALLING FAN COWL .
• Refer to INSTALLING THE REAR TOP CROSS CONNECTION .
• Refer to INSTALLING FRONT CROSS CONNECTION .
• Refer to INSTALLING FRONT-END STRUT ON LEFT AND RIGHT .
• Refer to INSTALLING THE COVER ON THE LEFT AND RIGHT IN THE ENGINE COMPARTMENT AT THE TOP .
• Refer to INSTALLING ACOUSTIC COVER .
• Refer to PREPARING THE EXHAUST SYSTEM .
• Refer to INSTALLING THE COMPLETE EXHAUST SYSTEM .
• Refer to INSTALLING THE CONNECTING SUPPORTS ON THE TUNNEL .
• Refer to INSTALLING THE THRUST FIELD .
• Refer to INSTALLING FRONT STIFFENING PLATE .
• Refer to INSTALLING THE FRONT UNDERBODY PROTECTION OR FRONT THRUST FIELD .
• Refer to VENTING THE HIGH-TEMPERATURE COOLANT SYSTEM .