11 31 505 Adjusting Timing Of Camshaft(s) (N52K)

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2013 BMW 128i, 2012 BMW 128i, 2011 BMW 128i, 2010 BMW 128i, and 2009 BMW 128i. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

For the following special tools, refer to MAINTENANCE AND GENERAL INFORMATION - SPECIAL TOOLS -- 128I .

00 9 120
00 9 250

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

11 0 300
11 4 280
11 4 281
11 4 282
11 4 283
11 4 290
11 9 340

Necessary preliminary tasks:

Remove cylinder head cover . See 11 12 000 REMOVING AND INSTALLING OR SEALING CYLINDER HEAD COVER (N52K) .

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

Fig 2: Sliding Special Tool (11 0 300)

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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.

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

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Part numbers (2) on inlet and exhaust camshafts (1) point upwards.

Fig 4: Identifying Part Numbers And Exhaust Camshafts

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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

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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)

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Release central bolts (1).

Release central bolts (1) with special tool 11 4 280 only.

Release chain tensioner (2) (have a cleaning cloth ready).

NOTE: Picture in CAD and does not show special tools.

Fig 7: Identifying Central Bolts And Chain Tensioner

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Turn sensor gears (2) in direction of arrow until locating pins (1) on special tool 11 4 290 match up.

Slide on special tool 11 4 290 in direction of arrow.

Fig 8: Turning Sensor Gears

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Secure special tool 11 4 290 with bolts (1).

Screw special tool 11 9 340 into cylinder head.

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

Secure both central bolts of inlet and exhaust adjustment units with special tool 00 9 120 to inlet and exhaust camshafts.

Tightening torque. See 11 36 1AZ in 11 36 VARIABLE CAMSHAFT CONTROL VANOS .

Fig 9: Identifying Bolts With Special Tools (11 4 280, 11 4 290, 11 9 340 And 00 9 250)

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Assemble engine.