11 31 005 Checking timing of camshaft(s) (N52)

Special tools required:

IMPORTANT: When the engine is shut down, the intake and exhaust camshaft adjusters are normally locked in their initial setting. In order to avoid incorrect timing adjustment, it is essential to check the locking of the camshaft adjuster and if necessary perform locking by rotating the camshafts.

Necessary preliminary tasks:

Remove CYLINDER HEAD COVER .
Remove UNDERBODY PROTECTION .

Remove fastener (1) in direction of arrow.

Installation note:

Install fastener (1) with bore facing outwards.

Fig 1: Removing Fastener

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Courtesy of BMW OF NORTH AMERICA, INC.

Rotate crankshaft at central bolt into TDC setting.

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

IMPORTANT: On vehicles with optional extra SA205 (automatic transmission), there is a large bore hole for the TDC setting shortly before the dowel hole. This bore hole can be confused with the dowel hole.

Fig 2: Securing Crankshaft Using Special Tool (11 0 300)

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Courtesy of BMW OF NORTH AMERICA, INC.

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

With 1st cylinder in TDC firing position, cams of intake camshaft (1) at 1st cylinder point upwards at an angle.

Fig 3: Identifying Position Of Intake Cams With Cylinder 1 At TDC

G09923261

Courtesy of BMW OF NORTH AMERICA, INC.

The timings are correct when the part numbers or read code (1) and the intake and exhaust camshafts point upwards.

Fig 4: Locating Camshaft Designation

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Courtesy of BMW OF NORTH AMERICA, INC.

With 1st cylinder in TDC firing position, cams of exhaust camshaft (3) at 6th cylinder point downwards at an angle.

Rocker arm (1) is not actuated.

NOTE: When the engine is installed, the position of the exhaust camshaft (3) for the timing can only be checked with a mirror.

Fig 5: Identifying Position Of Exhaust Cams At Cylinder 6 With Cylinder 1 At TDC

G09923263

Courtesy of BMW OF NORTH AMERICA, INC.

Secure special tool 11 4 283 with bolts (1) to cylinder head.

NOTE: Fit special tool 11 4 282 underneath on side of intake camshaft.

Mount special tool 11 4 281 on intake and exhaust camshafts.

Fig 6: Fitting Special Tools

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Courtesy of BMW OF NORTH AMERICA, INC.

If necessary, adjust VALVE TIMING .

Assemble engine.