Remove left cylinder head

WARNING: Hot fluids.
Risk of scalding!

Conduct all work in the vehicle wearing appropriate personal protective equipment only.

NOTE: TECHNICAL INFORMATION
Collect and dispose of emerging fluids. Observe country-specific waste disposal regulations.

NOTE: TECHNICAL INFORMATION
Grease the threads of new oxygen sensors thinly and evenly.
For oxygen sensors that are reused, the following should be observed:
Thinly and evenly grease the oxygen sensor on the thread only. Do not clean the part of the oxygen sensor that does not protrude into the exhaust line (sensor ceramics) and do not grease.

Preliminary work

Refer to SUCTIONING THE AIR CONDITIONING .
Refer to DEACTIVATING VEHICLE ELECTRICAL SYSTEM .
Refer to REMOVING THE COVER PANEL OF THE MASTER DME CONTROL UNIT .
Refer to REMOVING THE COVER PANEL OF THE SLAVE DME CONTROL DEVICE .
Refer to REMOVING THE ACOUSTIC COVER .
Refer to REMOVING THE CONTROL UNIT BRACKET FOR CYLINDERS 1 TO 4 .
Refer to REMOVING IGNITION COIL OF CYLINDER BANK 2 .
Refer to REMOVING RAIL FROM BANK 2 .
Refer to DISCONNECTING PLUG CONNECTIONS OF THE INJECTORS OF CYLINDER BANK 2 .
Refer to REMOVING INJECTORS .
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 DISCONNECTING THE REFRIGERANT LINE FROM THE EXPANSION VALVE .
Refer to REMOVING THE REFRIGERANT LINE BETWEEN THE AIR CONDITIONING CONDENSER AND THE EVAPORATOR .
Refer to REMOVING THE HOLDER WITH THE VEHICLE WIRING HARNESS FOR THE SENSOR SYSTEM OF CYLINDER BANK 1 .
Refer to REMOVING PRIMARY OXYGEN SENSOR FOR CYLINDERS 1 TO 4 .
Refer to REMOVING LAMBDA OXYGEN SENSOR FOR THE CYLINDERS 5 TO 8 .
Refer to REPLACING HOLDER OF THE DME CONTROL UNIT FOR CYLINDERS 5 TO 8 .
Refer to REMOVING LEFT HIGH PRESSURE PUMP .
Refer to REMOVING COOLANT EXPANSION TANK .
Refer to REMOVING EXPANSION TANK FOR THE CHARGE AIR COOLER .
Refer to LIFTING THE HEAT SHIELD AT THE SIDE .
Refer to REMOVING THE OXYGEN SENSOR MONITOR OF CYLINDER BANK 2 .
Refer to REMOVING CONDUIT FROM BANK 1 .
Refer to REMOVING THE TANK VENTILATION LINE OF CYLINDER BANK 1 PARTIALLY .
Refer to REMOVING ENGINE VENTILATION LINE OF CYLINDER BANK 2 .
Refer to REMOVING THE WIRING HARNESS FROM THE CYLINDER BANK 2 .
Refer to REMOVING UPPER HEAT SHIELD .
Refer to REMOVING THE FRONT HOOD SEAL .
Refer to REMOVING THE CENTER ENGINE COMPARTMENT COVER .
Refer to RELEASING LEFT FRONT-END STRUT .
Refer to RELEASING THE RIGHT FRONT-END STRUT .
Refer to REMOVING FRONT CROSS CONNECTION .
Refer to REMOVING LEFT INTAKE SILENCER HOUSING .
Refer to REMOVING THE CLEAN AIR PIPE OF CYLINDER BANK 2 .
Refer to REMOVING RIGHT INTAKE SILENCER HOUSING .
Refer to REMOVING THE CLEAN AIR PIPE OF CYLINDER BANK 1 .
Refer to REMOVING THE REAR TOP CROSS CONNECTION .
Refer to REMOVING FAN COWL WITH ELECTRIC MOTOR .
Refer to REMOVING DRIVE BELT .
Refer to REMOVING THE ALTERNATOR .
Refer to REMOVING THE BELT TENSIONER .
Refer to REMOVING THE COOLANT PUMP .
Refer to REMOVING THE FRONT UNDERBODY PROTECTION .
Refer to REMOVING UNDERBODY PLANKING ON LEFT AND RIGHT SIDE .
Refer to REMOVING THRUST FIELD .
Refer to REMOVING THE WHEEL ARCH COVER ON THE FRONT LEFT AND BOTTOM RIGHT .
Refer to DRAINING THE COOLANT FROM THE COOLANT PUMPS .
Refer to REMOVING OIL FILLER NECK .
Refer to REMOVING RIGHT CHARGE AIR COOLER .
Refer to REMOVING LEFT CHARGE AIR COOLER .
Refer to REMOVING THE INTAKE PIPE .
Refer to REMOVING LEFT THROTTLE VALVE ASSEMBLY .
Refer to REMOVING THE HOLDER WITH THE VEHICLE WIRING HARNESS FOR THE SENSOR SYSTEM OF CYLINDER BANK 1 .
Refer to REMOVING THE HOLDER WITH THE VEHICLE WIRING HARNESS FOR THE SENSOR SYSTEM OF CYLINDER BANK 2 .
Refer to REMOVING UPPER CATALYTIC CONVERTER NEAR ENGINE FROM CYLINDER BANK 1 .
Refer to REMOVING THE CATALYTIC CONVERTER NEAR THE ENGINE AT TOP OF CYLINDER BANK 2 .
Refer to REMOVING THE CLEAN AIR PIPE OF CYLINDER BANK 2 .
Refer to REMOVING THE CLEAN AIR PIPE OF CYLINDER BANK 1 .
Refer to REMOVING LEFT MOUNT .
Refer to REMOVING RIGHT MOUNT .
Refer to REMOVING THE LEFT AND RIGHT EXHAUST TURBOCHARGER .
Refer to REMOVING HEAT SHIELD OF THE CYLINDER HEAD COVER FOR CYLINDERS 1 TO 4 .
Refer to REMOVING HEAT SHIELD OF CYLINDER HEAD COVER OF CYLINDERS 5 TO 8 .
Refer to REMOVING BOTH EXHAUST MANIFOLDS .
Refer to REMOVING FRONT HEAT SHIELD .
Refer to REMOVING HEAT SHIELD AT BOTTOM .
Refer to REMOVING FUEL DELIVERY LINE .
Refer to REMOVING LEFT CYLINDER HEAD COVER .
Refer to REMOVING THE TIMING CASE COVER FROM THE CYLINDER HEAD OF CYLINDER BANK 2 .
Refer to REMOVING THE BELT PULLEY ON THE TORSIONAL VIBRATION DAMPER .
Refer to MOVING THE CRANKSHAFT INTO THE INSTALLATION POSITION OF CYLINDER BANK 1 .
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 .
Refer to INSTALLING THE SPECIAL TOOL TO SECURING THE CAMSHAFTS OF CYLINDER BANK 2 .
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 .

Prepare special tool (8.5 mm diameter)

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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Loosen hose clamp (1) .
Pull off coolant hose.

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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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Remove both exhaust manifolds

Loosen screws (1) .
Remove exhaust manifold (2) .

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Loosen screws (1) .
Remove exhaust manifold (2) .

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Remove gaskets (1) .

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Release the cylinder head bolt at the timing case cover

Release the screws (1) the timing case cover.

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Release the screw of the slide rail at the cylinder head of cylinder bank 2

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

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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 (11 8 350) on the cylinder head with standard M8 screws (1) .

TIGHTENING TORQUES SPECIFICATION

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

Release cylinder head, left

Releasing the left cylinder head

Fig 1: Left Cylinder Head Screws Loosening Sequence

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Loosen screws (1) to (10) .
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
Work must be carried out carefully in order to avoid component damage.

Attach 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) .

NOTE: TECHNICAL INFORMATION
Work must be carried out carefully in order to avoid component damage.

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Observe free movement of the tensioning rails and slide rails.
Risk of breakage.
Carefully lift the cylinder head using a workshop crane.
Turn the cylinder head to the V-area and feed out.
Remove cylinder head gasket (1) .

Courtesy of BMW OF NORTH AMERICA, INC.