11 36 144 Removing and installing/replacing left exhaust VANOS gear (S65)

WARNING: This page is about a different car, the 2010 BMW M3, 2009 BMW M3, and 2008 BMW M3. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

00 9 120
11 5 320
11 5 370
11 9 970
11 9 971
11 9 972

See MAINTENANCE AND GENERAL INFORMATION - SPECIAL TOOLS .

See ENGINE - SPECIAL TOOLS .

IMPORTANT: Central bolts on VANOS gears have left-hand threads.
Do not release the central bolt of the adjustment units without the special tool 11 9 970 .
Grease contact surfaces of central bolts with copper paste.

Necessary preliminary tasks:

Remove right cylinder head cover

Release bolts (1) on cylinder bank 2.

Remove timing case cover (2).

Installation:

Replace seal.

Fig 1: Identifying Cylinder Bank 2 Bolts And Timing Case Cover

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IMPORTANT: Both inlet and exhaust camshafts can be adjusted in the 1st cylinder firing TDC position.
Danger of mixing up both special tool bores.
The procedure for checking timing is different from that for adjusting.

Fig 2: Identifying Timing Marks

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Crank engine at central bolt.

Secure crankshaft with special tool 11 5 320 in firing TDC position of cylinder no. 1 .

Fig 3: Identifying Special Tool (11 5 320) On Vibration Damper

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Position of inlet camshafts, cyl. 5-8, in firing TDC position of cylinder no. 1.

Dihedron of inlet camshafts is vertical to cylinder axis, letters/numbers on camshafts point upwards (E2).

Fig 4: Identifying Letters/Numbers On Camshafts Point Upwards (E2)

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Position of exhaust camshafts, cyl. 5-8, in firing TDC position of cylinder no. 1.

Dihedron of camshafts is vertical to cylinder axis, letters/numbers on camshafts point upwards (A2).

Fig 5: Identifying Letters/Numbers On Camshafts Point Upwards (A2)

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Place special tool 11 9 971 on inlet camshaft.

Designation (E2) on dihedron points upwards.

Place special tool 11 9 972 on exhaust camshaft.

Designation (A2) on dihedron points upwards.

Secure special tools 11 9 971 and 11 9 972 with bolts (1) on cylinder head to 10 Nm.

Fig 6: Identifying Special Tools (11 9 971) And (11 9 972)

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Align gearwheels on exhaust adjustment unit with special tool 11 5 370 .

Fig 7: Identifying Special Tool (11 5 370) On Gearwheels

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IMPORTANT: Removal/installation is not possible without hexagon socket screw (2).
Hexagon socket screw (1) must not be longer than 10 mm.
Gearwheels of exhaust VANOS gear are pretensioned with a spring.

Insert M5x10 hexagon socket screw on VANOS gear.

NOTE: Picture shows cylinders 1-4.

Fig 8: Identifying Socket Screw

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IMPORTANT: CCW thread!
Release central bolts (1 and 2).

Installation:

Replace central bolts (1 and 2).

Fig 9: Identifying Central Bolts

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Installation:

If the hexagon socket screw is released or forgotten by mistake, the gear teeth can be readjusted with special tool 11 5 370 .

Screw in knurled screw on special tool 11 5 370 until gearwheel (1) lines up with bore (see arrow) on thread.

Failure to tension the exhaust VANOS gear (1) will result in rattling noises at idle.

NOTE: Picture shows (S85).

Fig 10: Identifying Special Tool (11 5 370) And Gearwheel

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Installation:

Check O-ring (1) on VANOS gear, replace if necessary.

Fig 11: Identifying VANOS Gear O-Ring

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IMPORTANT: Replace central bolt of adjustment unit.
Central bolt must be fully screwed once.

IMPORTANT: Rotate crankshaft at central bolt back until special tool 11 5 320 can be secured in the 10° position.

Fig 12: Rotating Crankshaft At Central Bolt With Special Tool (11 5 320)

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Installation:

Coat contact face of new central bolt (1) with copper paste.

Fig 13: Identifying Central Bolt

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Position VANOS adjustment unit on camshaft.

Hexagon socket screw points upwards.

Insert central bolts (1 and 2) and screw with special tool 00 9 120 .

Joining 10 Nm
Joining 20 Nm
Settling torque 80 Nm
Torsion angle 200°
Unscrew central bolt.
Joining 10 Nm

Fig 14: Inserting Central Bolts

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Remove hexagon socket screw (1) or special tool 11 5 370 .

NOTE: Picture shows cylinders 1-4.

Fig 15: Identifying Socket Screw

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Camshafts, cylinders 5-8, remain secured with special tool 11 9 970 .

Release special tool 11 5 320 and continue barring engine at central bolt 10° to firing TDC position of cylinder no. 1 .

Installation:

This minimizes timing chain and gearwheel play.

Secure crankshaft with special tool 11 5 320 .

Fig 16: Securing Crankshaft With Special Tool (11 5 320)

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Cylinders 5 to 8:

Always start screwing on the inlet side.

Secure central bolt (1) with special tool 00 9 120 .

IMPORTANT: Central bolt final tightening.

Joining 20 Nm
Settling torque 80 Nm
Torsion angle 200°

Fig 17: Securing Central Bolt With Special Tool (00 9 120)

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Secure central bolt (1) with special tool 00 9 120 .

IMPORTANT: Central bolt final tightening.

Joining 20 Nm
Settling torque 80 Nm
Torsion angle 200°

Fig 18: Securing Central Bolt With Special Tool (00 9 120)

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Remove all special tools.

Check timing , cylinders (5 to 8).

Assemble engine.