11 65 022 Removing and installing/replacing exhaust-gas turbocharger for cylinders 1-3 (N54)

Necessary preliminary tasks:

Remove both catalytic exhaust-gas converters. See REMOVING CATALYTIC CONVERTER FOR CYLINDERS 1-3 and REMOVING CATALYTIC CONVERTER FOR CYLINDERS 4-6 .
Remove RIGHT ENGINE SUPPORT ARM
Remove COOLANT PUMP
Unlock coolant hose from coolant thermostat to coolant pump and detach
Remove right CHARGE-AIR DUCT
Remove AIR DUCT , cylinders 1-3

Release screws (2).

Tightening torque 11 42 7AZ .

Installation:

Replace seal.

Release screw (1).

Tightening torque 11 42 8AZ .

Remove oil return line (3) in direction of arrow.

Installation:

Replace O-ring.

Fig 1: Identifying Screws And Oil Return Line

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IMPORTANT: Risk of damage!
Where necessary, to release the coolant feed lines (3 and 4), do not place pliers on the pipes.

Fig 2: Identifying Coolant Feed Lines And Screws

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Release screws (1 and 2).

Tightening torque 11 53 10AZ .

If necessary, release coolant feed lines (3 and 4) with suitable pliers at connection.

Installation:

Replace O-rings.

NOTE: For purposes of clarity, the illustration shows the released coolant feed lines removed.

Release screws (1).

Tightening torque 11 53 3AZ .

Remove feed line (2).

Installation:

Replace seal.

Fig 3: Identifying Feed Line And Screws

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IMPORTANT: Risk of damage!
Where necessary, to release the coolant feed and return lines (1 and 3), do not place pliers on the pipes.

Release screw (2).

Fig 4: Identifying Coolant Feed/Return Lines And Screw

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Tightening torque 11 53 8AZ .

If necessary, release coolant feed line (1) with suitable pliers at connection.

Installation:

Replace O-rings.

If necessary, release coolant return line (3) with suitable pliers at front connection.

Release screw (4).

Tightening torque 11 53 9AZ .

If necessary, release coolant return line (3) with suitable pliers at rear connection and remove.

Installation:

Replace O-rings.

Release screws (1).

Tightening torque 11 65 2AZ .

Remove retaining plate (2).

Release screws (3).

Tightening torque 11 65 2AZ .

Fig 5: Identifying Retaining Plate And Screws

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IMPORTANT: Risk of damage!
Carefully swing out heat shield (2) in direction of arrow.

Remove heat shield (2) in direction of arrow.

NOTE: Coolant feed line (1) can be removed with heat shield (2).

Fig 6: Identifying Heat Shield And Coolant Feed Line

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Release screws (1).

Tightening torque 11 65 3AZ .

Set holder (2) down on cylinder head cover.

Fig 7: Identifying Screws And Holder

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Release screw (1).

Tightening torque 11 42 4AZ .

Release oil feed line (2) in direction of arrow.

Installation:

Replace O-ring.

Fig 8: Identifying Screw And Oil Feed Line

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Release screw (1).

Tightening torque 11 42 5AZ .

IMPORTANT: Risk of damage!
Where necessary, to release the oil feed line (2), do not place pliers on the pipe.

Fig 9: Identifying Oil Feed Line And Screw

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If necessary, release oil feed line (2) with suitable pliers at connection and remove.

Installation:

Replace O-rings.

Detach vacuum hose (3) from vacuum unit (wastegate valve).

Unscrew nuts (2).

Tightening torque 11 65 1AZ .

Remove turbocharger (1) downwards.

IMPORTANT: Risk of damage!
Do not misuse linkage of vacuum unit (wastegate valve) to transport turbocharger (1)!

Fig 10: Identifying Turbocharger, Vacuum Hose And Nuts

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Installation:

Replace graphite sealing rings (1).

Fig 11: Identifying Sealing Rings

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Assemble engine.

Clear fault memory in DME control unit.

Carry out BMW LEAK TEST for intake system.

Observe DME control unit instructions.