Removing the cylinder head

• All work on the high-voltage system may only be carried out by specially trained and technically experienced personnel.
• For additional information see: 61 00... SAFETY INSTRUCTIONS ON HANDLING HYBRID CARS .
• For additional information see: 61 25... NOTES ON REPAIR OF HIGH-VOLTAGE BATTERY UNIT .

Preliminary work 

• Refer to BRINGING FRONT COMPARTMENT LID IN THE SERVICE POSITION .
• Refer to DISCONNECTING ALL BATTERY GROUND LEADS .
• Refer to REMOVING THE ACOUSTIC COVER .
• Refer to REMOVING THE COVER OF THE ENGINE COMPARTMENT AT THE REAR LEFT .
• Refer to REMOVING THE SEAL FOR THE HOOD REAR .
• Refer to REMOVING LEFT AND RIGHT WIPER ARM .
• Refer to REMOVING THE COWL COVER .
• Refer to REMOVING TRAILING LINK AT SPRING BOLT .
• Refer to REMOVING THE CENTER COWL UPPER PART .
• Refer to REMOVING LEFT SEALING FRAME .
• Refer to REMOVING RIGHT SEALING FRAME .
• Refer to LOOSENING HIGH-VOLTAGE CABLES ON THE ELECTRICAL MACHINE ELECTRONICS .
• Refer to REMOVING ACOUSTIC COVER AT REAR .
• Refer to REMOVING THE CENTER FIREWALL LOWER PART .
• Refer to REMOVING INTAKE SILENCER HOUSING .
• Refer to REMOVING RESONATOR .
• Refer to REMOVING CLEAN AIR PIPE .
• Refer to REMOVING CHARGE AIR LINE .
• Refer to REMOVING THE CYLINDER HEAD COVER ACOUSTIC COVER .
• Refer to REMOVING IGNITION COILS .
• Refer to REMOVING ALL SPARK PLUGS .
• Refer to REMOVING THE HIGH PRESSURE LINE BETWEEN THE HIGH PRESSURE PUMP AND THE RAIL .
• Refer to REMOVING FUEL DELIVERY LINE .
• Refer to REMOVING HIGH PRESSURE PUMP .
• Refer to REMOVING THE INJECTORS .
• Refer to REMOVING THE HEAT SHIELD FROM THE EXHAUST MANIFOLD .
• Refer to REMOVING THE LAMBDA OXYGEN SENSOR .
• Refer to REMOVING THE OXYGEN SENSOR MONITOR .
• Refer to REMOVING THE DME CONTROL UNIT .
• Refer to REMOVING THE INTEGRATED POWER SUPPLY MODULE (PDM) .
• Refer to REMOVING CONTROL UNIT BRACKET .
• Refer to REMOVING THE FRONT UNDERBODY PROTECTION OR FRONT THRUST FIELD .
• Refer to REMOVING THE FRONT THRUST FIELD .
• Refer to REMOVING REAR THRUST FIELD .
• Refer to RELEASING THE OIL DRAIN PLUG .
• Refer to TIGHTENING THE OIL DRAIN PLUG .
• Refer to DRAINING THE COOLANT FROM THE HIGH-TEMPERATURE COOLING SYSTEM .
• Refer to DRAINING THE COOLANT FROM THE LOW-TEMPERATURE COOLING SYSTEM .
• Refer to REMOVING THE CONNECTING SUPPORT FROM THE TUNNEL .
• Refer to IF INSTALLED: REMOVING THE TORSION STRUT ON THE RIGHT AND LEFT WHERE REQUIRED .
• Refer to REMOVING THE REAR AXLE COVER .
• Refer to REMOVING THE REAR DIFFUSER .
• Refer to REMOVING COMPLETE EXHAUST SYSTEM .
• Refer to REMOVING CATALYTIC CONVERTER .
• Refer to PARTIALLY RELEASING ACOUSTIC COVER OF OIL SUMP .
• Refer to REMOVING THE THERMOSTAT FROM THE TRANSMISSION OIL LINES .
• Refer to REMOVING THE ACOUSTIC COVER FOR THE ENGINE AT THE FRONT .
• Refer to REMOVING AUXILIARY COOLANT PUMP FOR THE TURBOCHARGER .
• Refer to REMOVING FRONT ENGINE ENCAPSULATION .
• Refer to REMOVING THE COOLANT FEED LINE FOR THE TURBOCHARGER (COOLANT RETURNING LINE REMOVED) .
• Refer to REMOVING THE COOLANT RETURNING LINE FOR THE TURBOCHARGER (AUXILIARY COOLANT PUMP REMOVED) .
• Refer to REMOVING THE OIL RETURN LINE FOR THE TURBOCHARGER .
• Refer to REMOVING THE OIL FEED LINE FOR THE TURBOCHARGER (ENGINE ENCAPSULATION REMOVED) .
• Refer to REMOVING TANK VENT VALVE .
• Refer to REMOVING INTAKE PLENUM .
• Refer to REMOVING BOTH ACTUATORS .
• Refer to REMOVING THE CYLINDER HEAD COVER .
• Refer to TURNING THE ENGINE ON THE VIBRATION DAMPER .
• Refer to BLOCKING THE CAMSHAFTS .
• Refer to BLOCKING THE CRANKSHAFT IN HE TDC FIRING POSITION OF CYLINDER 1 .
• Refer to REMOVING CHAIN TENSIONER .
• Refer to RELEASING THE VANOS CENTRAL VALVE .
• Refer to REMOVING EXHAUST CAMSHAFT ADJUSTER .
• Refer to REMOVING INTAKE ADJUSTER .
• Refer to DISASSEMBLING THE SPECIAL TOOL 2 358 122 .

• Unlock coolant line (1)  and detach.

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• Unlock and detach the connectors (1)  and (2)  .
• Loosen the engine encapsulation (3)  around the cylinder head.

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• Unclip the cable (1)  from the acoustic cover (2)  in the highlighted area.

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• Release screws (1)  to (3)  .
  Fig 1: Acoustic Cover Screws Loosening Sequence

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• Loosen screws (1)  .
• Remove the slide rail (2)  .

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• Secure the intake camshaft with an open-end wrench (1)  .
• Unscrew the bolt (2)  and remove the camshaft sensor wheel (3)  .

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• Loosen screws (1)  .

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• Use the special tool 0 495 747 (11 8 580)  for releasing the cylinder head bolts.

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• Unscrew the cylinder head bolts in the sequence (10)  to (1)  in 360 degree steps.

• Remove the cylinder head (1)  and the turbocharger with the workshop crane and the special tool 0 490 561 (11 0 000)  .

Courtesy of BMW OF NORTH AMERICA, INC.