11 31 505 Adjusting Camshaft Timing (N54)

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2010 BMW 335xi, 2010 BMW 335i, 2009 BMW 335xi, 2009 BMW 335i, and 2008 BMW 335xi. 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

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: Removing 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 block crankshaft. See 11 0 300 PLUG MANDREL

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. See 11 0 300 PLUG MANDREL

Fig 2: Sliding In 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: Identifying Special Tool (11 4 283) On Cylinder Head

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With 1st cylinder in firing TDC position, cams of exhaust camshaft (2) and inlet camshaft (1) at 6th cylinder point downwards at an angle.

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

Fig 4: Identifying 1st Cylinder In Firing TDC Position

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Release central bolt (1) of exhaust camshaft.

Installation:

Replace screw (1).

Tightening torque, see 11 36 1AZ in ENGINE -- TORQUE SPECIFICATIONS -- TWIN TURBO

Release central bolt (2) of inlet camshaft.

Installation:

Replace screw (2).

Tightening torque, see 11 36 1AZ in ENGINE -- TORQUE SPECIFICATIONS -- TWIN TURBO

Fig 5: Identifying Inlet & Exhaust Camshaft Bolts

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Rotate sensor gears until locating pins on special tool 11 8 520 match up. See 11 8 520 GAUGE WITH SCREWS

Push special tool 11 8 520 onto cylinder head. See 11 8 520 GAUGE WITH SCREWS

Secure special tool 11 8 520 with bolts (1 and 2). See 11 8 520 GAUGE WITH SCREWS

NOTE: Bolts (1 and 2) M6x45 with captive shim.

Fig 6: Identifying Special Tool (11 8 520) Onto Cylinder Head

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Remove chain tensioner (1).

Screw special tool 11 9 340 into cylinder head. See 11 9 340 CHAIN TENSIONER, COMPLETE

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, see 11 36 1AZ in ENGINE -- TORQUE SPECIFICATIONS -- TWIN TURBO

Fig 7: Identifying Central Bolts

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Remove all special tools.

Assemble engine.