11 36 046 Removing And Installing/Replacing Inlet And Exhaust Adjustment Units (N12)

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

Special tools required:

00 9 120
11 9 340
11 9 540
11 9 590

IMPORTANT: Always release both central bolts to adjust the timing. The timing is not determined at firing TDC of cylinder no. 1.
Modified procedure for timing adjustment.
All pistons are in the 90° position.
Check locking of adjustment units.

Necessary preliminary tasks:

Remove cylinder head cover.
Check timing.

Rotate crankshaft at central bolt.

Slide in special tool 11 9 590 in direction of arrow and block crankshaft.

Fig 1: Identifying Special Tool (11 9 590) On Crankshaft

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Release screws (1).

Remove slide rail (2).

Fig 2: Identifying Slide Rail With Screws

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IMPORTANT: Risk of damage!
To open central bolt, mount special tool 11 9 540 on camshaft.
If the setting gauges cannot be positioned, grip the camshaft with an open-end wrench to release the central bolt.

Fig 3: Identifying Special Tool (11 9 540) On Inlet Camshaft

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Release chain tensioner (1) (have a cleaning cloth ready).

Tightening torque: See ENGINE - TIGHTENING TORQUES .

Fig 4: Identifying Chain Tensioner

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Release bearing pin (1) on guide rail.

Tightening torque: See ENGINE - TIGHTENING TORQUES .

Installation:

Replace sealing ring.

Fig 5: Identifying Bearing Pin

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Release central bolts of inlet adjustment unit (1) and exhaust adjustment unit (2).

Detach inlet adjustment unit from inlet camshaft.

Detach exhaust adjustment unit from exhaust camshaft.

Fig 6: Identifying Central Bolts

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IMPORTANT:

Danger of mixing up adjustment units .
Mixing up the adjustment units will result in engine damage.

The inlet and exhaust adjustment units are different.

VANOS is marked with IN for the inlet camshaft.

VANOS is marked with EX for the exhaust camshaft.

Fig 7: Identifying Inlet Camshaft And Exhaust Camshaft

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Place adjustment units of exhaust camshaft marked EX on timing chain.

Position adjustment unit on exhaust camshaft and secure with central bolt (3).

The installation position of the adjustment units can be freely selected.

Fig 8: Identifying Central Bolt

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Place adjustment units of inlet camshaft marked IN on timing chain.

Position adjustment unit on inlet camshaft and secure with central bolt (1).

The installation position of the adjustment units can be freely selected.

Fig 9: Identifying Central Bolts

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Install slide rail (2).

Insert screws (1).

Fig 10: Identifying Slide Rail With Screws

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Screw special tool 11 9 340 into cylinder head.

Pretension timing chain with special tool to 0.4 Nm .

Fig 11: Identifying Special Tool (11 9 340) Into Cylinder Head

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

Tightening torque: See ENGINE - TIGHTENING TORQUES .

Fig 12: Identifying Special Tool (00 9 120) On Central Bolt

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

Tightening torque: See ENGINE - TIGHTENING TORQUES .

Fig 13: Identifying Special Tool (00 9 120) On Central Bolt

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Fit chain tensioner.

Check timing.

Assemble engine.