Adjusting timing of camshaft(s) (B48 and B46 engine) (Cooper S and John Cooper Works)

Special tools required:

2 288 380
0 496 855
2 450 487
2 358 122
11 6 480

Preliminary work needed:

Remove CATALYTIC CONVERTER
Check TIMING .

IMPORTANT: Risk of damage to engine.
The notes for CHECKING AND ADJUSTING THE TIMING must be strictly observed!
The notes on CHECKING AND ADJUSTMENT OF TIMING must be strictly observed!
If the crankshaft is disconnected properly, it is not possible to turn the engine forwards or backwards on the vibration damper!

Vehicles with manual transmission:

Dimension (x) = 56 mm.

Insert the special tool 2 288 380 up to dimension (X) into the dowel hole.

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Vehicles with manual transmission:

Special tool 2 288 380 correctly positioned.

The engine is located at the first cylinder at TDC.

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Vehicles with manual transmission:

Special tool 2 288 380 incorrectly positioned.

The TDC setting of the first cylinder has not been achieved.

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Vehicles with automatic transmission:

Dimension (Y) = 66 mm.

Insert the special tool 2 288 380 up to dimension (Y) into the dowel hole.

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Vehicles with automatic transmission:

Special tool 2 288 380 correctly positioned.

The engine is located at the first cylinder at TDC.

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Vehicles with automatic transmission:

Special tool 2 288 380 incorrectly positioned.

The TDC setting of the first cylinder has not been achieved.

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Release CHAIN TENSIONER (1).

IMPORTANT: Have a cleaning cloth ready. A small quantity of motor oil will leakage after the screw connection has been released.

Installation note:

A new chain tensioner and sealing ring must be installed.

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Version 1

Use the reversible ratchet head (2) from special tool 0 496 855 with special tool 2 450 487 to release the central valve (1).

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Version 2

Use special tool 0 496 855 to release the central valve (1).

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NOTE: If special tool 2 358 122 cannot be mounted, the timing must be readjusted.

Mount gauge (1) from special tool 2 358 122.

If necessary, turn the crankshaft a little using the special tool 11 6 480.

Mount the counter support (3) and loosen the VANOS central valve of the intake camshaft with the special tool 0 496 855.

If necessary, turn the crankshaft a little further using the special tool 11 6 480.

Mount the counter support (2) and loosen the VANOS central valve of the exhaust camshaft with the special tool 0 496 855.

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Turn both camshafts to position.

NOTE: The markings (1) on the intake and exhaust camshafts can be read from above.

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IMPORTANT: The special tool can also be fitted if the camshafts are rotated by 180 degrees.
The middle one of the three flat sections (1) on the intake and exhaust camshafts must point upwards.