11 31 505 Adjusting camshaft timing (B48B)

WARNING: This page is about a different car, the 2018 BMW 330i and 2017 BMW 330i. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

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

Attention!

Risk of damage to engine.

THE NOTES FOR CHECKING AND ADJUSTING THE TIMING MUST BE STRICTLY OBSERVED!

Necessary preliminary work:

Check TIMING .

Release CHAIN TENSIONER (1).

Attention!

Have a cleaning cloth ready. A small quantity of engine oil will escape 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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Attention!

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.

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Secure basic carrier (1) by screws (2) on cylinder head.

Position gauge (3) with recess on mounting flats of exhaust camshaft.

Secure basic carrier (3) by screws (5) on basic carrier.

Position gauge (4) with recess on mounting flats of intake camshaft.

Secure gauge (4) by screws (5) on basic carrier.

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Install new chain tensioner.

Tighten chain tensioner (1).

Tightening torque 11 31 1AZ .

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Tighten VANOS central valve of the intake adjuster (1) with special tool 0 496 855 or 2 450 487.

Tightening torque 11 36 1AZ .

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Tighten VANOS central valve of the exhaust camshaft adjuster (1) with special tool 0 496 855 or 2 450 487.

Tightening torque 11 36 1AZ .

Remove special tools 2 288 380 and 2 358 122 .

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Crank engine with special tool 11 6 480 twice in direction of engine rotation.

Attention!

Do not crank engine in reverse direction.

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Required follow-up work:

Check CAMSHAFT TIMING .
Fit CYLINDER HEAD COVER .