Remove left cylinder head

WARNING: This page is about a different car, the 2022 BMW X7, 2021 BMW X7, 2020 BMW X7, and 2019 BMW X7. However, it is still accessible from the selected car via links, so may be relevant.

WARNING: Hot surfaces .
Risk of burning!

Perform all work only on components that have cooled down.

Preliminary work

Refer to SUCTIONING THE AIR CONDITIONING .
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 RIGHT AND LEFT 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 THE FRONT INTAKE PIPE PARTIALLY .
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 ADJUSTING 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.

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

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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: Slide Rail To 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) .

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

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