11 65 045 Removing and installing/replacing low-pressure exhaust turbocharger (M57T2-SCR)

WARNING: This page is about a different car, the 2013 BMW X5, 2012 BMW X5, and 2011 BMW X5. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

12 2 100

WARNING: Risk of burning!
Only perform this repair work on an engine that has cooled down.

Recycling:

Catch escaping engine oil with suitable auxiliary materials.

Observe country-specific waste disposal regulations.

NOTE: Troubleshooting on exhaust turbocharger.

Necessary preliminary tasks:

IMPORTANT: In event of exhaust turbocharger damage:

Pressure pipes
Charge air cooler
Intake plenum

check the above for foreign bodies, damage and correct function, replacing if necessary.

Unfasten screw (1)

Tightening torque: 11 65 3AZ .

Fig 1: Identifying Exhaust Turbocharger Screw

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(E90 only)

NOTE: For improved accessibility:
Loosen hose clamp.
Slide gaiter (1) to one side.
Release track rod (2) from rack.
Tightening torque: 32 21 1AZ .

Fig 2: Identifying Track Rod And Gaiter

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Release screws (1) and remove holder (2).

Tightening torque: 11 00 4AZ .

Release nut (3) and disengage linkage.

Remove VACUUM UNIT for turbine control flap.

Fig 3: Identifying Turbine Control Flap Holder And Screws

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Detach vacuum hose (3) from connecting piece.

Unfasten screws (2).

Tightening torque: 11 00 4AZ .

Release hose clamp (1) from oil return line.

Tightening torque: 11 42 4AZ .

Fig 4: Identifying Vacuum Hose And Screws

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Loosen hose clamps (1).

Tightening torque: 11 42 4AZ .

Fig 5: Identifying Hose Clamps

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Release screws (1) with special tool 12 2 100 .

Tightening torque: 11 65 2AZ .

Remove L.P. turbocharger downwards.

Installation note:

Clean sealing surfaces and replace gasket.

To avoid damaging the threads and prevent exhaust turbocharger leaks, insert mounting bolts in 1/2 turns simultaneously.

Fig 6: Releasing Screws With Special Tool (12 2 100)

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When replacing low-pressure turbocharger, release screws (1) and modify compressor bypass (2).

Tightening torque: 11 00 2AZ .

Replace O-ring.

Fig 7: Identifying Low-Pressure Turbocharger And Screws

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IMPORTANT: Nut (1) must not be released under any circumstances.

Do not use linkage (2) as a carrying handle.

(May result in failure of the turbocharger group).

Fig 8: Identifying Linkage And Nut

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IMPORTANT: Spacer ring (1) must be fitted without fail.
Clean threads (2) with thread cutter.

Fig 9: Identifying Spacer Ring

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Adjust TURBINE CONTROL FLAP.

Assemble engine.