Remove left cylinder head

WARNING: Hot surfaces .
Risk of burning!

Perform all work only on components that have cooled down.

Preliminary work

Refer to DISCONNECTING ALL BATTERY GROUND LEADS .
Refer to REMOVING THE LEFT AND RIGHT UNDERSHIELD (TANK COVER) .
Refer to REMOVING THE REAR LEFT AND RIGHT TENSION STRUT .
Refer to REMOVING THE LEFT AND RIGHT REAR DIFFUSER .
Refer to REMOVING THE STIFFENING PLATE .
Refer to REMOVING EXHAUST SYSTEM .
Refer to REMOVING THE FRONT UNDERBODY PROTECTION .
Refer to REMOVING THE ACOUSTIC COVER .
Refer to REMOVING LEFT OXYGEN CONTROL SENSOR .
Refer to REMOVING RIGHT OXYGEN CONTROL SENSOR .
Refer to REMOVING SUSPENSION STRUT BRACE .
Refer to REMOVING RIGHT SUSPENSION STRUT BRACE .
Refer to REMOVING INTAKE SILENCER HOUSING .
Refer to REMOVING COVER FOR THE RIGHT DME CONTROL UNIT .
Refer to REMOVING THE RIGHT UNFILTERED-AIR DUCT .
Refer to REMOVING COVER FOR THE DME CONTROL UNIT ON LEFT .
Refer to REMOVING THE DME CONTROL UNIT FOR CYLINDERS 5 TO 8 .
Refer to REMOVING THE HOLDER FOR THE DME CONTROL UNIT ON THE LEFT .
Refer to REMOVING THE RIGHT OXYGEN SENSOR MONITOR .
Refer to REMOVING LEFT OXYGEN MONITOR SENSOR .
Refer to REMOVING THE RIGHT-HAND ENGINE VENTILATION LINE AND THE CRANKCASE VENTILATION INTAKE PIPE .
Refer to REMOVING THE LEFT ENGINE VENTILATION LINE .
Refer to REMOVING UPPER HEAT SHIELD .
Refer to RELEASING SCREW BETWEEN THE LEFT AND RIGHT HEAT SHIELD .
Refer to REMOVING THE LEFT HEAT SHIELD .
Refer to REMOVING RIGHT HEAT SHIELD .
Refer to REMOVING THE CATALYTIC CONVERTER FOR CYLINDERS 5 TO 8 .
Refer to REMOVING THE TOP LEFT COVER IN THE ENGINE COMPARTMENT , and REMOVING THE TOP RIGHT COVER IN THE ENGINE COMPARTMENT .
Refer to REMOVING UPPER CROSS CONNECTION .
Refer to REMOVING THE TENSION STRUT AT THE SHOCK TOWER ON THE LEFT AND RIGHT .
Refer to REMOVING THE REAR TOP CROSS CONNECTION .
Refer to REMOVING THE LEFT UNFILTERED-AIR DUCT .
Refer to REMOVING FAN COWL .
Refer to DRAINING THE COOLANT FROM THE HIGH-TEMPERATURE COOLING SYSTEM .
Refer to DRAINING THE COOLANT FOR THE LOW-TEMPERATURE COOLANT CIRCUIT .
Refer to RELEASING LEFT CHARGE AIR LINE PARTIALLY .
Refer to PARTIALLY RELEASING THE RIGHT CHARGE AIR LINE .
Refer to REMOVING LEFT CLEAN AIR PIPE .
Refer to REMOVING RIGHT CLEAN AIR PIPE .
Refer to REMOVING THE COOLANT EXPANSION TANK FOR THE LOW-TEMPERATURE COOLANT CIRCUIT .
Refer to REMOVING DRIVE BELT .
Refer to REMOVING LEFT CHARGE AIR COOLER .
Refer to REMOVING RIGHT CHARGE AIR COOLER .
Refer to REMOVING THE LEFT AND RIGHT EXHAUST TURBOCHARGER .
Refer to REMOVING THE COOLANT PUMP .
Refer to REMOVING THE BELT TENSIONER .
Refer to REMOVING THE BELT PULLEY ON THE TORSIONAL VIBRATION DAMPER .
Refer to REMOVING THE IGNITION COIL FROM CYLINDER 1 .
Refer to REMOVING THE IGNITION COILS OF CYLINDERS 5-8 .
Refer to RELEASING THE WIRING HARNESS SECTION FROM THE LEFT HAND CYLINDER HEAD COVER .
Refer to REMOVING THE HIGH-PRESSURE RAIL ON THE LEFT .
Refer to REMOVING THE INJECTORS FOR CYLINDERS 5 TO 8 .
Refer to REMOVING FUEL DELIVERY LINE .
Refer to REMOVING LEFT HIGH PRESSURE PUMP .
Refer to REMOVING FRONT HEAT SHIELD .
Refer to REMOVING VANOS SOLENOID ACTUATOR, EXHAUST OF CYLINDER BANK 2 .
Refer to REMOVING VANOS SOLENOID ACTUATOR, INTAKE OF CYLINDER BANK 2 .
Refer to REMOVING LEFT CYLINDER HEAD COVER .
Refer to REMOVING THE SEALING CAP ON THE CYLINDER HEAD OF THE CYLINDER BANK 2 .
Refer to MOVING THE CRANKSHAFT TO THE INSTALLATION POSITION TO ADJUST THE TIMINGS .
Refer to CHECKING THE VANOS ADJUSTER OF CYLINDER BANK 2 .
Refer to RELAXING CHAIN TENSIONER ON BANK 2 FOR CHECKING OR SETTING TIMING .
Refer to REMOVING HYDRAULIC CHAIN TENSIONER OF CYLINDER BANK 2 .
Refer to PRELOADING THE TIMING CHAIN OF CYLINDER BANK 2 .
Refer to FIXING THE ENGINE IN THE INSTALLATION POSITION ON CYLINDER 1 (SET VALVE TIMINGS) .
Refer to REMOVING BOTH LEFT VANOS ADJUSTERS .
Refer to REMOVING SPECIAL TOOL FOR FIXING CAMSHAFTS IN POSITION ON BANK 2 .
Refer to REMOVING SPECIAL TOOL TO PRETENSION TIMING CHAIN ON CYLINDER BANK 2 .

CAUTION: Heavy component .
Heavy components can lead to injury or damage .

Remove and install heavy components with the aid of another person/other persons.

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.

Prepare the special tool 0 494 116 (11 8 352) from the set of special tools 0 493 997 (11 8 350) in a vice.
Mark special tool 0 494 116 (11 8 352) in area A = 50 mm.
Set a punch in the center of the marked area.
Drill a hole with a diameter of 8.5 mm.

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NOTE:
RISK OF DAMAGE
Improper screw length can cause component damage .
The use of screws of improper length can lead to component damage .
- Note the correct screw length.
- Install screws that correspond to the original length.
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Tighten the special tool 0 494 116 (11 8 352) from the set of special tools 0 493 997 (118 350) on the cylinder head with standard M8 screws (1).

TIGHTENING TORQUE SPECIFICATIONS

Special tool to cylinder head bank 2
M8 screw	tightening torque 25 Nm

Loosen hose clamp (1).
Detach the coolant hose from the left cylinder head.

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Release the wiring harness section (1) together with the clamps (arrowed) from the intake plenum (2).

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Unlock the connector (1) and detach from the servomotor.
Unlock the connector (2) and detach from pressure sensor on intake plenum.

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Feed out the coolant hose (1) and set it aside.

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Loosen screws (1).
Remove the heat shield (2) at rear on the cylinder head.

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Release the screws (1) the timing case cover.

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Release the screw of the slide rail on the cylinder head of cylinder bank (1).

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Loosen screws (1) to (10).

Fig 1: Cylinder Head Screws Loosening Sequence
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To remove the cylinder head bolt (1) on the fifth cylinder, turn camshaft (2) with standard open-end wrench (3) on the hexagon head.

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NOTE: TECHNICAL INFORMATION
The work must be performed with vehicle care to prevent component damage.
Attach the special tool 0 490 561 (11 0 000) 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).

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NOTE: TECHNICAL INFORMATION
The work must be performed with vehicle care to prevent component damage.
Mind the free movement of the tensioning rails and slide rails .
Risk of breakage!
Carefully lift the cylinder head using a workshop crane.
Carefully feed out and remove the cylinder head with a workshop crane and three support persons.
Remove cylinder head gasket (1).

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