11 31 028 Removing And Installing/Replacing Exhaust Camshaft (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:

11 4 480
11 9 000
11 9 590
11 9 650
11 9 652

IMPORTANT: It is absolutely essential to follow an exact procedure for removing and installing the exhaust camshaft.
Modified procedure for timing adjustment.
All pistons are in the 90° position.
Risk of damage!

Necessary preliminary tasks:

Remove cylinder head cover.
Remove vacuum pump.
Remove exhaust adjusting unit for exhaust camshaft.
Release central bolt of inlet adjustment unit.

IMPORTANT: The screws of the bearing bridge must not be opened.
Releasing the bearing bridge will result in damage to the cylinder head.

Fig 1: Identifying Camshaft Stop

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Risk of damage to spark plug bores.
Check special tool 11 9 652 for damage.

Secure special tool 11 9 650 on cylinder head with screws 1 in spark plug holes.

Fig 2: Identifying Special Tool (11 9 650) On Cylinder Head

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Release bearing caps with special tool 11 9 650 only.
Shown without special tools for purposes of clarity.

Release bearing cap screws from 10 to 1.

Set all bearing caps down in special tool 11 4 480 in a tidy and orderly fashion.

Fig 3: Identifying Bearing Cap Screws

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Both camshafts have different identifications.
Mixing up the two camshafts will result in engine damage .
EX Exhaust camshaft.
IN Inlet camshaft.

Fig 4: Identifying (IN And EX) Camshaft Installation Position

Courtesy of BMW OF NORTH AMERICA, INC.

Check plain compression rings (1) for damage and replace if necessary.

Plain compression rings (1) are engaged at joint.

Press plain compression rings (1) apart upwards and downwards and removed towards front.

IMPORTANT: Plain compression rings (1) can easily break.

Fig 5: Identifying Plain Compression Rings

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IMPORTANT: Removal on engine:
Block engine with special tool 11 9 590 .

Removed cylinder head:

When using special tool 11 9 000 , it will be necessary to remove the aluminum profile insert.

Installation:

Before installing exhaust camshaft, make sure roller rocker arm is correctly seated HVCA element and valve.

Fig 6: Identifying Roller Rocker Arm

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Installation:

Lubricate all bearing points with engine oil.

Insert camshaft (1).

Pay attention to installation position (2).

Fig 7: Identifying Camshaft Installation Position

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IMPORTANT: Both camshafts have different identifications.
Mixing up the two camshafts will result in engine damage .
EX Exhaust camshaft.
IN Inlet camshaft.

Designation (EX) on exhaust camshaft points upwards.

Fig 8: Identifying (IN And EX) Camshaft Installation Position

Courtesy of BMW OF NORTH AMERICA, INC.

Make sure plain compression rings (1) can move freely.

Align plain compressing rings (1) in downward direction.

Lubricate all bearing points (2) with engine oil.

Fig 9: Identifying Plain Compression Rings And Bearing Lubricating Points

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Secure special tool 11 9 650 on cylinder head with screws 1 in spark plug holes.

Pretension camshaft (2).

Fit and secure bearing bridges.

Fig 10: Identifying Special Tool (11 9 650) On Cylinder Head

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Bearing bridges, allocation of exhaust camshaft from (0 to 4).

Fig 11: Identifying Exhaust Camshaft

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Fit all bearing bridges from 0 to 4.

Secure screws in sequence (1 to 10).

Tightening torque: See ENGINE - TIGHTENING TORQUES .

NOTE: Shown without special tool 11 9 650 for purposes of clarity.

Fig 12: Identifying Bearing Cap Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Adjust valve timing.

Assemble engine.