11 21 500 Replacing crankshaft (N52K)

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2010 BMW 528xi, 2010 BMW 528i, 2009 BMW 528xi, 2009 BMW 528i, and 2008 BMW 528xi. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

IMPORTANT: Aluminium-magnesium materials.
No steel screws/bolts may be used due to the threat of electrochemical corrosion.
A magnesium crankcase requires aluminum screws/bolts exclusively.
Aluminum screws/bolts must be replaced each time they are released.
Aluminum screws/bolts are permitted with and without color coding (blue).
For reliable identification:
Aluminum screws/bolts are not magnetic .
Jointing torque and angle of rotation must be observed without fail (risk of damage) .

Necessary preliminary tasks:

Remove engine
Mount engine on ASSEMBLY STAND
Remove VIBRATION DAMPER
Remove oil sump
Remove OIL PUMP
Remove oil pump/vacuum pump CHAIN MODULE
Remove timing CHAIN MODULE
Remove CYLINDER HEAD
Remove FLYWHEEL
Removing all PISTONS

Release bolts (1).

Tightening torque 11 13 6AZ .

Installation:

Replace aluminum screws.

Remove oil deflector (2).

NOTE: Graphic shows the screw connection of the oil deflector (2) for vehicles with optional extra SA203 (all-wheel drive).

Fig 1: Identifying Bolts And Screws

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Release bolts (1).

Tightening torque 11 11 2AZ .

Release screws (2).

Tightening torque 11 11 3AZ .

Installation:

Replace aluminum screws.

Fig 2: Identifying Bolts And Screws

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Release bolts (1).

Tightening torque 11 11 4AZ .

Release screws (2).

Tightening torque 11 11 2AZ .

Installation:

Replace aluminum screws.

Release steel screws (1 to 14) from outside inwards.

Tightening torque 11 11 1AZ .

Fig 3: Crankcase Bolts Tightening/Loosening Sequence

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Release bolts (1).

Tightening torque 11 11 3AZ .

Installation:

Replace aluminum screws.

Lift out bedplate.

Fig 4: Identifying Bolts Location

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Remove crankshaft (1) in direction of arrow.

IMPORTANT: Remove crankshaft with aid of a second person.
Weight of crankshaft approx. 25 kg.

Remove BEARING SHELLS (2) and guide bearing shell (3), replace if necessary.

Clean all sealing faces with special tool 11 4 470 .

Fig 5: Identifying Bearing Shell And Crankshaft

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Check adapter sleeves (1) for damage and secure seating; replace if necessary.

Install all BEARING SHELLS .

Installation:

Lubricate all bearing points with engine oil.

NOTE: Graphic shows N46.

Fig 6: Identifying Adapter Sleeves

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Insert crankshaft (1).

IMPORTANT: Install crankshaft with aid of a second person.
Weight of crankshaft approx. 25 kg.

Fig 7: Identifying Crankshaft

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Tighten steel screws (1 to 14) from inside outwards.

Tightening torque 11 11 1AZ .

Tighten screws (2) from inside outwards.

Tightening torque 11 11 2AZ .

Tighten screws (1).

Tightening torque 11 11 4AZ .

Installation:

Replace aluminum screws.

Fig 8: Crankcase Bolts Tightening/Loosening Sequence

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Tighten aluminum screws exclusively with special tool 00 9 120 .

IMPORTANT: In the case of aluminum screws, jointing torque and angle of rotation must be observed without fail.

Fig 9: Identifying Special Tool 00 9 120

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Set up stand with magnetic foot (1) on special tool 11 4 440 .

Set up special tool 00 2 510 on stand.

Position special tool 00 2 510 on crankshaft.

Move crankshaft in direction of arrow.

Determine BEARING PLAY .

Fig 10: Setting Up Stand With Magnetic Foot On Special Tool

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Drive in both nozzles (1) with special tool 11 9 360 on left and right into crankcase.

Installation:

Always replace nozzles (1).

Fig 11: Identifying Nozzles With Special Tool 11 9 360

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Installation:

Prepare sealing compound (1) in special tool 11 4 370 .

Screw on nozzle (2) for injecting sealing compound.

Slowly insert sealing compound (1) with special tool 11 4 370 in direction of arrow.

Fig 12: Inserting Sealing Compound With Special Tool

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Replace CRANKSHAFT RADIAL SEAL at front.

Replace CRANKSHAFT RADIAL SEAL (transmission side).

Assemble engine.