Installing the left cylinder head

• There must be no fluids or foreign materials in the cylinder bores, remove if necessary.

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• Check the fitting sleeves (1) for correct seating and damage and replace if necessary.

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• Close oil hole in the area (1) with a classification B plug from the set of special tools 2 364 711. 

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• Clean sealing surface (1) with special tool 0 495 103 (11 4 471) from set of special tools 0 495 102 (11 4 470). 

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• Clean sealing surface (1) with special tool 0 495 104 (11 4 472) from set of special tools 0 495 102 (11 4 470). 

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  NOTE: TECHNICAL INFORMATION 
  If there are foreign bodies or fluids present in the bores, the tightening torque values can be falsified.
• Clean bores of cylinder head bolts (1) with compressed air.

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• Clean sealing surface (1) with special tool 0 495 103 (11 4 471)  from set of special tools 0 495 102 (11 4 470). 

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• Clean sealing surface (1) with special tool 0 495 104 (11 4 472) from set of special tools 0 495 102 (11 4 470). 

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• Replace cylinder head gasket (1).

  Parts:  Cylinder head gasket

• Replace screws.

  Parts:  Screws

• Position cylinder head gasket (1) on the fitting sleeves on the engine block.

  If the cylinder head has been reworked, a thicker cylinder head gasket must be installed. 

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• Position cylinder head with a workshop crane.
  NOTE: RISK OF DAMAGE 
  Damage to guide rails. 
  The application of great force can damage the guide rails of the timing chain. 

  • When removing and installing the cylinder head, make sure that the cylinder head does not damage the guide rail.

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  NOTE: TECHNICAL INFORMATION 
  The work must be performed with vehicle care to prevent component damage.
• Insert cylinder head.
  NOTE: TECHNICAL INFORMATION 
  The work must be performed with vehicle care to prevent component damage.
• Detach the special tool 0 490 567 (11 0 020) on the retaining tab (1) and on the special tool 0 494 116 (11 8 352) from the set of special tools 0 493 997 (11 8 350). 

Tightening left cylinder head 

• Tighten screws in the order (1) to (10).

• Detach the special tool 0 490 567 (11 0 020) on the engine mounting bracket (1) and on the special tool 0 494 116 (11 8 352) from the set of special tools 0 493 997 (11 8 350). 

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• Release the screws (1) on the special tool 0 494 116 (11 8 352) from the set of special tools 0 493 997 (11 8 350) from the cylinder head. 
• Remove the special tool 0 494 116 (11 8 352)  from the set of special tools 0 493 997 (11 8 350). 

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Fastening cylinder head bolts on timing case cover 

• Secure the screws (1) to the timing case cover.

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Mounting the special tool on the processed surface of the camshaft 

• Pay attention to the installation position: 

  For the camshaft (1) there are three machined surfaces. The special tool 2 249 117 can only be mounted in the marked position, (arrow).

• Mount special tool 2 249 117. 

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• Replace sealing ring (1).
• Position sealing ring (1) on the bearing bolt (2).

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• Position the slide rail.
• Tighten the screw of the slide rail on the cylinder head of cylinder bank (1).
  TIGHTENING TORQUE SPECIFICATIONS
  
  

  Slide rail to cylinder head
  Bearing screw	Tightening torque	25 Nm

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  Install both exhaust manifolds 

  NOTE: TECHNICAL INFORMATION 
  The sealing surfaces must be free of oil, grease and cleaning agents.
  NOTE: TECHNICAL INFORMATION 
  Make sure that there are no particles or impurities in the medium openings. Coolant or foreign substances in the oil can cause engine damage such as damage to the connecting rod bearing.

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  NOTE: RISK OF DAMAGE 
  Careless handling of tools and sharp-edged components. 
  Scratches, surface damage. 

  • Protect working area.
  • Handle tools and components carefully.
• Clean sealing surfaces (1).
  NOTE: TECHNICAL INFORMATION 
  The sealing surfaces must be free of oil, grease and cleaning agents.
  NOTE: TECHNICAL INFORMATION 
  Make sure that there are no particles or impurities in the medium openings. Coolant or foreign substances in the oil can cause engine damage such as damage to the connecting rod bearing.

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  NOTE: RISK OF DAMAGE 
  Careless handling of tools and sharp-edged components. 
  Scratches, surface damage. 

  • Protect working area.
  • Handle tools and components carefully.
• Clean sealing surfaces (1).
• Replace seals (1).

  Parts:  Seals

• Position seals (1).

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  NOTE: TECHNICAL INFORMATION 
  The seals fit in one installation orientation only. Ensure correct installation.
• Install seal (1) with the side of the bead (2) (seal cavity) toward the exhaust manifold (3).

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• Position exhaust manifold (2).
• Replace screws (1).

  Parts:  Screws

• Tighten down screws (1).
  TIGHTENING TORQUE SPECIFICATIONS
  
  

  Exhaust manifold
  M8x40 screw Replace screw.	tightening torque	25 Nm
  	Angle of rotation	45°

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• Position exhaust manifold (2).
• Replace screws (1).

  Parts:  Screws

• Tighten down screws (1).

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• Slide the coolant hose on.
• Tighten the hose clamp (1).
  TIGHTENING TORQUE SPECIFICATIONS
  
  

  Coolant ventilation line
  Hose clamp	Tightening torque	1.5 Nm

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  NOTE: To provide a better overview: Schematic diagram with partially hidden components.
• Secure the wiring harness mountings (1) below the intake system.

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Follow-up work 

• Refer to INSTALLING BOTH LEFT VANOS ADJUSTERS (CYLINDER HEAD INSTALLATION CYLINDER BANK 2) .
• Refer to INSTALLING THE BELT PULLEY ON THE TORSIONAL VIBRATION DAMPER .
• Refer to INSTALLING HEAT SHIELD ON THE BOTTOM .
• Refer to INSTALLING FRONT HEAT SHIELD .
• Refer to INSTALLING BOTH EXHAUST MANIFOLDS .
• Refer to INSTALLING THE HEAT SHIELD OF THE CYLINDER HEAD COVER FOR CYLINDERS 5 TO 8 .
• Refer to INSTALLING THE HEAT SHIELD OF THE CYLINDER HEAD COVER FOR CYLINDERS 1 TO 4 .
• Refer to INSTALLING THE LEFT CYLINDER HEAD COVER .
• Refer to INSTALLING LEFT AND RIGHT EXHAUST TURBOCHARGERS .
• Refer to INSTALLING WIRING HARNESS SECTION FOR IGNITION SYSTEM OF BANK 2 .
• Refer to INSTALLING RIGHT HIGH PRESSURE PUMP .
• Refer to INSTALLING THE LEFT HIGH PRESSURE PUMP .
• Refer to INSTALLING THE HEAT SHIELD OF THE CRANKCASE VENTILATION OF CYLINDERS 5 TO 8 .
• Refer to INSTALLING FUEL DELIVERY LINE .
• Refer to ATTACHING THE RIGHT FUEL SUPPLY LINE .
• Refer to SECURING COOLANT LINES FOR THE EXHAUST TURBOCHARGERS .
• Refer to INSTALLING RAIL ON BANK 2 .
• Refer to INSTALLING THE IGNITION COILS OF CYLINDER BANK 2 .
• Refer to INSTALLING THE IGNITION COILS OF CYLINDERS 1 AND 2
• Refer to FASTENING THE COOLANT LINE BETWEEN THE COOLANT PUMP AND THE HEAT EXCHANGER .
• Refer to INSTALLING THE LEFT THROTTLE BODY .
• Refer to INSTALLING THE CHARGE AIR COOLER ON THE LEFT AND RIGHT .
• Refer to INSTALLING FRONT UNDERBODY PROTECTION .
• Refer to INSTALLING THE LOWER LEFT FRONT WHEEL ARCH COVER .
• Refer to INSTALLING ALTERNATOR .
• Refer to INSTALLING DRIVE BELT .
• Refer to INSTALLING THE PRESSURE LINE BETWEEN THE EVAPORATOR AND THE AIR CONDITIONING CONDENSER .
• Refer to SECURING THE REFRIGERANT LINE TO THE CONNECTING PIECE .
• Refer to INSTALLING THE SAFETY PRESSURE SWITCH .
• Refer to INSTALLING THE HOLDER FOR THE DME CONTROL UNIT ON THE LEFT .
• Refer to INSTALLING THE DME CONTROL UNIT OF CYLINDERS 5 TO 8 .
• Refer to INSTALLING COVER FOR THE LEFT DME CONTROL UNIT .
• Refer to INSTALLING FAN COWL .
• Refer to INSTALLING THE RIGHT UNFILTERED-AIR DUCT .
• Refer to INSTALLING OIL FILLER NECK .
• Refer to INSTALLING BOTH EXHAUST MANIFOLDS .
• Refer to INSTALLING THE HEAT SHIELD OF THE CYLINDER HEAD COVER FOR CYLINDERS 5 TO 8 .
• Refer to INSTALLING THE HEAT SHIELD OF THE CYLINDER HEAD COVER FOR CYLINDERS 1 TO 4 .
• Refer to INSTALLING FRONT HEAT SHIELD .
• Refer to INSTALLING LEFT AND RIGHT EXHAUST TURBOCHARGERS .
• Refer to INSTALLING UPPER CATALYTIC CONVERTER NEAR ENGINE FOR BANK 2 .
• Refer to INSTALLING CATALYTIC CONVERTER NEAR THE ENGINE ABOVE CYLINDER BANK 1 .
• Refer to INSTALLING HEAT SHIELD, TOP .
• Refer to INSTALLING THE LAMBDA OXYGEN SENSOR FOR THE CYLINDERS 1 TO 4 .
• Refer to INSTALLING THE LAMBDA OXYGEN SENSOR FOR THE 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 THE OXYGEN SENSOR MONITOR FOR CYLINDERS 1 TO 4 .
• Refer to INSTALLING RIGHT INTAKE SILENCER HOUSING .
• Refer to INSTALLING THE LEFT UNFILTERED-AIR DUCT .
• 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 INSTALLING THE ENGINE VENTILATION LINE OF CYLINDER BANK 2 .
• Refer to FASTENING THE ENGINE VENTILATION LINE OF CYLINDER BANK 2 .
• Refer to INSTALLING LEFT INTAKE SILENCER HOUSING .
• Refer to INSTALLING THE REAR TOP CROSS CONNECTION .
• Refer to INSTALLING THE FRONT-END STRUT .
• Refer to INSTALLING UPPER CROSS CONNECTION .
• Refer to INSTALLING ACOUSTIC COVER .
• Refer to INSTALLING THE COVER IN THE ENGINE COMPARTMENT AT TOP LEFT and INSTALLING THE COVER IN THE ENGINE COMPARTMENT ON THE TOP RIGHT .
• Refer to INSTALLING THE FRONT SECTION OF THE FRONT WHEEL ARCH COVER .
• Refer to MOUNTING THE WHEEL .
• Refer to RECONNECTING ALL BATTERY GROUND LEADS .
• Refer to FILLING THE HIGH-TEMPERATURE COOLING SYSTEM WITH THE VACUUM FILLING EQUIPMENT .
• Refer to VENTING THE HIGH-TEMPERATURE COOLANT SYSTEM .
• Refer to FILLING THE LOW-TEMPERATURE COOLING SYSTEM WITH THE VACUUM FILLING EQUIPMENT .
• Refer to VENTING THE LOW-TEMPERATURE COOLING SYSTEM .
• Refer to EVACUATE AND CHARGE CONDITIONING .
• Refer to CHECKING ENGINE OIL LEVEL .