11 31 051 Replacing timing chain (N52T)

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2017 BMW X3, 2016 BMW X3, 2015 BMW X3, 2014 BMW X3, and 2013 BMW X3. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

Necessary preliminary work:

Remove CYLINDER HEAD COVER
Remove all SPARK PLUGS .
Remove CHAIN TENSIONER .
Remove CRANKSHAFT SEAL at front
Remove drive belt TENSIONER
Remove VIBRATION DAMPER

Remove fastener (1) in direction of arrow.

Installation note:

Install fastener (1) with bore hole 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 dowel hole and secure crankshaft.

IMPORTANT: On vehicles with automatic transmission, there is a large bore hole for the TDC position shortly before the dowel bore. This bore hole can be confused with the dowel bore.

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

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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.

IMPORTANT: Do not remove special tool 11 0 300 to release central bolt (1).
Employ a second person for gripping when releasing central bolt (1).

Screw special tool 11 9 280 onto hub of vibration damper.

Release central screw (1).

Tightening torque: 11 21 1AZ .

Remove hub towards front.

Fig 3: Removing Central Screw

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Open plug (1).

Tightening torque: 11 31 5AZ .

Fig 4: Identifying Screw Plug

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Open plug (1).

Tightening torque: 11 11 7AZ .

Installation note:

Replace aluminum screws.

Fig 5: Identifying Screw Plug

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Release bearing pin (1) from timing chain module on cylinder head.

Tightening torque: 11 31 5AZ .

Fig 6: Releasing Bearing Pin From Timing Chain Module On Cylinder Head

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Release bearing pin (1) from timing chain module on crankcase.

Tightening torque: 11 31 4AZ .

Fig 7: Releasing Bearing Pin From Timing Chain Module On Crankcase

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IMPORTANT: Install special tool 11 4 280 to release the central bolts on the intake and exhaust camshaft adjusters.

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.

Fig 8: Fitting Special Tool (11 4 282) Underneath On Side Of Intake Camshaft

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

Do not remove special tool 11 4 280 .

Remove INTAKE AND EXHAUST CAMSHAFT ADJUSTERS .

Release bolts (1) from timing chain module on cylinder head.

Tightening torque: 11 31 3AZ .

Remove chain module with timing chain and camshaft sprocket upwards in direction of arrow.

Fig 9: Releasing Bolts From Timing Chain Module On Cylinder Head

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IMPORTANT: Note installation direction of sprocket (2).
Collar (see arrow) on sprocket (2) points to engine .
Incorrect assembly will result in engine damage .

Fig 10: Identifying Collar On Camshaft Sprocket