11 31 505 Adjusting camshaft timing (N54, N54T)

WARNING: This page is about a different car, the 2013 BMW Z4, 2012 BMW Z4, 2011 BMW Z4, 2010 BMW Z4, and 2009 BMW Z4. However, it is still accessible from the selected car via links, so may be relevant.

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 note:

Install fastener (1) with bore facing outwards.

Fig 1: Removing Fastener

G04751152

Courtesy of BMW OF NORTH AMERICA, INC.

Rotate crankshaft at central bolt into TDC position.

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

Fig 2: Sliding In Special Tool 11 0 300

G04754924

Courtesy of BMW OF NORTH AMERICA, INC.

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.

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

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

IMPORTANT: If 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 4 280

G04754926

Courtesy of BMW OF NORTH AMERICA, INC.

With cylinder No. 1 in ignition TDC position, cams of exhaust camshaft (2) and intake camshaft (1) at 6th cylinder 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: Identifying Inlet And Exhaust Camshaft

G04754925

Courtesy of BMW OF NORTH AMERICA, INC.

Release central bolt (1) of exhaust camshaft.

Installation note:

Replace screw (1).

Tightening torque 11 36 1AZ .

Release central bolt (2) of inlet camshaft.

Installation note:

Replace screw (2).

Fig 5: Identifying Central Bolt Of Inlet And Exhaust Camshaft

G04754984

Courtesy of BMW OF NORTH AMERICA, INC.

Tightening torque 11 36 1AZ .

Rotate increment wheels until retaining 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: Bolts M6 x 45 (1 and 2) with captive washer.

Fig 6: Identifying Special Tool 11 8 520 With Bolts

G04754985

Courtesy of BMW OF NORTH AMERICA, INC.

REMOVE CHAIN TENSIONER (1).

Screw special tool 11 9 340 into cylinder head.

Pre-tension 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 .

Fig 7: Identifying Chain Tensioner And Central Bolts

G04754986

Courtesy of BMW OF NORTH AMERICA, INC.

Remove all special tools.

Assemble engine.