11 31 505 Adjusting camshaft timing (N54)

WARNING: This page is about a different car, the 2010 BMW X6, 2009 BMW X6, and 2008 BMW X6. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

00 9 120
00 9 250
11 0 300
11 4 281
11 4 283
11 8 520
11 9 340

See MAINTENANCE AND GENERAL INFORMATION - SPECIAL TOOLS .

See ENGINE - SPECIAL TOOLS (N54, N63) .

IMPORTANT: Risk of damage!
To open the central bolt at the camshaft, grip hexagon on rear of camshaft.

Necessary preliminary tasks:

Remove cylinder head cover .

Remove fastener (1) in direction of arrow.

Installation:

Install fastener (1) with bore facing outwards.

Fig 1: Identifying Fastener

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Rotate crankshaft at central bolt into TDC position.

Slide in special tool 11 0 300 in direction of arrow and secure crankshaft.

IMPORTANT: On engines with automatic transmissions, there is shortly before the special tool bore for the TDC position a large bore which can be confused with the special tool bore.

If the flywheel is secured in the correct bore with special tool 11 0 300 , the engine can no longer be moved at the central bolt.

Fig 2: Identifying Flywheel And Special Tool 11 0 300

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Fit special tool 11 4 283 with screws (1).

Fit special tool 11 4 281 on special tool 11 4 283 .

IMPORTANT: If the special tool 11 4 281 cannot be installed, the camshaft must be rotated at the hexagon head at the rear.

Fig 3: Fit Special Tool 11 4 283 On Cylinder Head

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With cylinder no. 1 in firing TDC position, cams of exhaust camshaft (2) and inlet camshaft (1) at cylinder no. 6 point downwards at an angle.

NOTE: If the timing is adjusted while the engine is installed, the position of the camshaft can only be checked with a mirror.

Fig 4: Ensure Cams Of Exhaust Camshaft (2) And Inlet Camshaft (1) At Cylinder No. 6 Point Downward At An Angle

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Release central bolt (1) of exhaust camshaft.

Installation:

Replace screw (1).

Tightening torque 11 36 1AZ , see 11 36 VARIABLE CAMSHAFT CONTROL

Release central bolt (2) of inlet camshaft.

Installation:

Replace screw (2).

Tightening torque 11 36 1AZ , see 11 36 VARIABLE CAMSHAFT CONTROL

Fig 5: Identifying Central Bolt Of Exhaust Camshaft And Inlet Camshaft

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Rotate sensor gears until locating pins on special tool 11 8 520 match up.

Push special tool 11 8 520 onto cylinder head.

Secure special tool 11 8 520 with bolts (1 and 2).

NOTE: M6 x 45 bolts (1 and 2) with captive shim.

Fig 6: Identifying Special Tool 11 8 520 And Bolts

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Remove chain tensioner (1).

Screw special tool 11 9 340 into cylinder head.

Pretension timing chain with special tool 00 9 250 to 0.6 Nm.

Tighten central bolts (2 and 3) with special tool 00 9 120 .

Tightening torque 11 36 1AZ , see 11 36 VARIABLE CAMSHAFT CONTROL

Fig 7: Identifying Chain Tensioner And Central Bolts

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Remove all special tools.

Assemble engine.