11 31 005 Checking Timing Of Camshaft(s) (N52K)

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Special tools required:

For the following special tools, refer to ENGINE- SPECIAL TOOLS (N52K) .

11 0 300
11 4 281
11 4 282
11 4 283

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 . See 11 12 000 REMOVING AND INSTALLING OR SEALING CYLINDER HEAD COVER (N52K) .
Remove underbody protection. See 51 47 490 REMOVING AND INSTALLING/REPLACING FRONT UNDERBODY PROTECTION .

Remove fastener (1) in direction of arrow.

Installation:

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

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

Fig 2: Sliding Special Tool (11 0 300)

G04751153

Courtesy of BMW OF NORTH AMERICA, INC.

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

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

Fig 3: Identifying Inlet Camshaft

G04751154

Courtesy of BMW OF NORTH AMERICA, INC.

The timings are correct when the part numbers (2) on the inlet and exhaust camshafts (1) point upwards.

Fig 4: Identifying Part Numbers And Exhaust Camshafts

G04751155

Courtesy of BMW OF NORTH AMERICA, INC.

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

Cam follower (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 Exhaust Camshaft And Angle Camshaft

G04751156

Courtesy of BMW OF NORTH AMERICA, INC.

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

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

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

Fig 6: Identifying Cylinder Head Bolts With Special Tools (11 4 282, 11 4 283 And 11 4 281)

G04751157

Courtesy of BMW OF NORTH AMERICA, INC.

If necessary, adjust valve timing. See 11 31 505 ADJUSTING TIMING OF CAMSHAFT(S) (N52K) .

Assemble engine.