Remove left cylinder head

WARNING: Hot surfaces.
Risk of burning!

Perform all work only on components that have cooled down.

WARNING: Vehicle may slip off the vehicle hoist if the vehicle hoist is handled incorrectly.
Danger! Immobilization period-threatening injuries!

Observe safety instructions on raising the vehicle using a vehicle hoist.
For additional information see: RAISING THE VEHICLE WITH A VEHICLE LIFT .

NOTE: RISK OF DAMAGE
Mechanical effects.
Paint damage.

Mask those working areas at risk with yellow plastic adhesive tape.
Remove and install heavy or bulky components with the aid of another person/other persons.

NOTE: TECHNICAL INFORMATION
In order to guarantee the quality of the Driver Assistance functions in vehicles with concealed radar sensors, the component may be repainted only in compliance with the following instructions.
No stickers or films (transparent or colored) may be affixed in the transmission areas of the radar sensors.
If there are no radar sensors fitted, the component may be painted.
The following features can be used to identify whether radar sensors are installed on the vehicle:
Radar sensors are installed at the rear if the triangular warning light is present on the exterior mirror (in the mirror glass or on the mirror frame).
Radar sensors are installed at the front and rear if the triangular warning light is present on the exterior mirror (in the mirror glass or on the mirror frame) in conjunction with optional equipment S5ATA or S5AUA.

Preliminary work

Refer to SUCTIONING THE AIR CONDITIONING .
Refer to REMOVING LUGGAGE COMPARTMENT FLOOR COVERING .
Refer to REMOVING THE LOADING EDGE TRIM .
Refer to REMOVING BOTH LEDS FROM THE LUGGAGE COMPARTMENT .
Refer to PARTIALLY REMOVING THE LUGGAGE COMPARTMENT WHEEL ARCH TRIM PANEL ON THE LEFT AND RIGHT .
Refer to REMOVING THE COVER FOR THE WATER CHANNEL LEFT AND RIGHT .
Refer to REMOVING THE TAIL LIGHT ON THE LEFT AND RIGHT SIDE PANEL .
Refer to REMOVING THE REAR DIFFUSER .
Refer to REMOVING REAR BUMPER TRIM .
Refer to REMOVING BOTH REAR SIDE TRIM STRIPS .
Refer to REMOVING BOTH EXHAUST COVERS .
Refer to PARTIALLY REMOVING THE REAR LEFT AND RIGHT WHEEL ARCH COVERS .
Refer to REMOVING REAR BUMPER PANEL .
Refer to REMOVING TANK COVER ON LEFT AND RIGHT .
Refer to REMOVING CENTER STIFFENING PLATE .
Refer to REMOVING EXHAUST SYSTEM .
Refer to REMOVING THE RETAINING BRIDGE .
Refer to REMOVING THE RETAINING BRIDGE IN VEHICLES WITH A GASOLINE PARTICULATE FILTER .
Refer to PARTIALLY REMOVING THE LEFT LAMBDA OXYGEN SENSOR .
Refer to PARTIALLY REMOVING THE LAMBDA OXYGEN SENSOR .
Refer to REMOVING THE LEFT OXYGEN SENSOR MONITOR .
Refer to REMOVING THE RIGHT OXYGEN SENSOR MONITOR .
Refer to REMOVING UPPER HEAT SHIELD .
Refer to REMOVING THE LEFT HEAT SHIELD .
Refer to REMOVING RIGHT HEAT SHIELD .
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 REMOVING LEFT AND RIGHT WIPER ARM .
Refer to REMOVING WINDSHIELD PANEL COVER .
Refer to REMOVING TRAILING LINK AT SPRING BOLT .
Refer to REMOVING THE COWL UPPER PART IN THE CENTER .
Refer to LIFTING THE HEAT SHIELD .
Refer to REMOVING THE CATALYTIC CONVERTER FOR CYLINDERS 5 TO 8 .
Refer to REMOVING THE CENTER ENGINE COMPARTMENT COVER .
Refer to REMOVING BOTH FRONT-END STRUTS .
Refer to REMOVING UPPER CROSS CONNECTION .
Refer to REMOVING THE REAR TOP CROSS CONNECTION .
Refer to REMOVING FAN COWL .
Refer to REMOVING DRIVE BELT .
Refer to RELEASING LEFT CHARGE AIR LINE PARTIALLY .
Refer to PARTIALLY RELEASING THE RIGHT CHARGE AIR LINE .
Refer to REMOVING THE FRONT BOTTOM SIDE COVER .
Refer to REMOVING THE RIGHT HAND FRONT BOTTOM SIDE COVER .
Refer to REMOVING THE FRONT UNDERBODY PROTECTION .
Refer to REMOVING THE UNDERBODY PROTECTION OF THE STEERING GEAR AND THRUST FIELD RESPECTIVELY .
Refer to DRAINING COOLANT .
Refer to REMOVING THE COOLANT PUMP .
Refer to DRAINING THE COOLANT FOR THE LOW-TEMPERATURE COOLANT CIRCUIT .
Refer to REMOVING THE COOLANT EXPANSION TANK FOR THE LOW-TEMPERATURE COOLANT CIRCUIT (CHARGE AIR COOLER) .
Refer to REMOVING BOTH CHARGE AIR COOLERS .
Refer to REMOVING THE CLEAN AIR PIPE OF CYLINDER BANK 1 .
Refer to REMOVING THE CLEAN AIR PIPE OF CYLINDER BANK 2 .
Refer to REMOVING THE IGNITION COILS OF CYLINDERS 1 AND 5 .
Refer to REMOVING IGNITION COIL OF CYLINDER BANK 2 .
Refer to REMOVING FUEL DELIVERY LINE .
Refer to REMOVING LEFT HIGH PRESSURE PUMP .
Refer to REMOVING THE HIGH-PRESSURE RAIL ON THE LEFT .
Refer to REMOVING THE INJECTORS FOR CYLINDERS 5 TO 8 .
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 THE LEFT AND RIGHT EXHAUST TURBOCHARGER .
Refer to REMOVING FRONT HEAT SHIELD .
Refer to REMOVING THE OIL FEED LINE AT THE EXHAUST TURBOCHARGER FOR CYLINDERS 5 TO 8 .
Refer to REMOVING LEFT CYLINDER HEAD COVER .
Refer to REMOVING THE PRESSURE LINE BETWEEN THE EVAPORATOR AND THE AIR CONDITIONING CONDENSER .
Refer to REMOVING THE TIMING CASE COVER FROM THE CYLINDER HEAD OF 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 the special tool 0 494 116 (11 8 352) in the area (A) .
(A) = 50 mm
Set a punch in the center of the marked area.
Drill a hole with a 8.5 mm drill.

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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.

Tighten the special tool 0 494 116 (11 8 352) from the set of special tools 0 493 997 (11 8 350) on the cylinder head with standard M8screws (1) .

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

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Unlock and disconnect the plug connection (1) on the throttle valve.

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Unlock and disconnect the quick-release coupling (1) .

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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) .

Fig 1: Cylinder Head Screws Loosening Sequence
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Loosen screws (1) to (10) .

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Twist the camshaft (2) to remove the cylinder head bolt (1) on cylinder 5 with a 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) .
NOTE: TECHNICAL INFORMATION
The work must be performed with vehicle care to prevent component damage.

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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 3 support persons.
Remove cylinder head gasket (1) .

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