Special tools required:

WARNING: This page is about a different car, the 2008 BMW 760Li and 2007 BMW 760Li. However, it is still accessible from the selected car via links, so may be relevant.

00 9 120. See 00 9 120 TORQUE ANGLE MEASURING DIAL
11 7 270. See 11 7 270 PIN WRENCH

Cylinders 7 to 12.

Necessary preliminary tasks:

Drain coolant. See 17 00 005 DRAINING AND ADDING COOLANT (N73)
Drain engine oil. See 00 00 610 ENGINE OIL SERVICE (N73)
Remove left exhaust manifold. See 18 40 010 REMOVING AND INSTALLING/REPLACING LEFT EXHAUST MANIFOLD (N73)
Remove intake air manifold. See 11 61 050 Removing and Installing Intake Air Manifold (N73)
Remove left cylinder head cover. See 11 12 005 Removing and Installing/Sealing Left Cylinder Head Cover (N73)
Remove left timing case cover. See 11 14 080 Removing and Installing Top Left Timing Case Cover (N73)
Remove inlet and exhaust adjustment unit on left side. See 11 36 047 Removing and installing/replacing inlet and exhaust VANOS on left side (N73)
Detach water hose (vent hose) from cylinder head.

IMPORTANT: Fit new cylinder head screws.
Do not wash off bolt coating.
There must be no oil in the blind holes (risk of cracking ).

Remove screw connection (1) from Valvetronic drive with special tool 11 7 270. See 11 7 270 PIN WRENCH

Remove worm drive (2) in direction of arrow.

Fig 1: Removing Screw Connection From Valvetronic Drive

Courtesy of BMW OF NORTH AMERICA, INC.

Adjust eccentric shaft to max. stroke and pretension tensioning spring (1) with a cable tie (2).

Feed tensioning spring (1) out from roller (3) and carefully relieve tension.

Fig 2: Identifying Pretension Tensioning Spring With Cable Tying

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Reset eccentric shaft to minimum stroke.

Fig 3: Identifying Turn Eccentric Shaft To Minimum Stroke

Courtesy of BMW OF NORTH AMERICA, INC.

Release screw connection on tensioning spring (1) and remove towards top.

Fig 4: Identifying Tensioning Spring

Courtesy of BMW OF NORTH AMERICA, INC.

Release screw connection on eccentric shaft sensor (2) and remove.

Installation:

Tightening torque:11 37 1AZ. See 11 37 VARIABLE VALVE GEAR

Fig 5: Identifying Eccentric Shaft Sensor Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Detach guide rail from cylinder head.

Fig 6: Identifying Guide Rail Screw

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Release screw for oil lines (1) and unclip from holders.

Release cylinder head bolts (2) on timing case cover.

Release cylinder head bolts (3) along line (4) from outside to inside.

Fig 7: Identifying Cylinder Head Bolts

Courtesy of BMW OF NORTH AMERICA, INC.

Coat gap (1) between engine block and timing case cover with Drei Bond 1209 liquid sealant (sourcing reference: BMW Parts Service).

Check adapter sleeves (2) for damage and correct installation position, replace if necessary.

Installation:

All bores and blind holes must be free of oil and coolant. If necessary, blow clean with compressed air.

Install new cylinder head gasket. See 11 12 110 Replacing Left Cylinder Head Gasket (N73)

Fig 8: Identifying Adapter Sleeves Installation Position

Courtesy of BMW OF NORTH AMERICA, INC.

Put the cylinder head on.

Install cylinder head bolts with washers and initially tighten without play.

Tighten down cylinder head bolts with special tool 00 9 120 in sequence 1 to 14. See 00 9 120 TORQUE ANGLE MEASURING DIAL

Installation:

Tightening torque 11 12 8AZ. See 11 12 CYLINDER HEAD WITH COVER

Fig 9: Left Cylinder Head Bolts Tightening/Loosening Sequence

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Shown without camshafts for purposes of clarity.

Insert and tighten down screws between cylinder head and timing case cover.

Installation:

Tightening torque, 11 14 1AZ. See 11 14 CASE COVERS

Fig 10: Identifying Timing Case Cover Bolts

Courtesy of BMW OF NORTH AMERICA, INC.

Adjust valve timing. See 11 31 573 Adjusting Camshaft Timing On Left Side (N73)

Install engine in reverse sequence to its removal.

Installation:

Coat all bearings and cams of camshafts with engine oil.