11 65 022 Removing and installing/replace exhaust turbocharger for cylinders 1-3 (N54, N54T)

IMPORTANT: It is not necessary to carry out a chassis/wheel alignment check to release the steering tie rod.

Necessary preliminary tasks

Remove both catalytic converters. See CATALYTIC CONVERTER FOR CYLINDERS 1-3 and CATALYTIC CONVERTER FOR CYLINDERS 4-6 .
Release TRACK ROD on steering box.
Remove CHARGE AIR COOLER .
Drain coolant. See DRAINING AND ADDING COOLANT .
Remove COOLANT EXPANSION TANK .
Remove COOLANT THERMOSTAT .
Remove COOLANT PUMP .
Remove both vacuum reservoirs.
Remove right CHARGE-AIR DUCT .

Release screws (1).

Tightening torque 11 42 7AZ .

Installation note:

Replace gasket.

Release screw (2).

Tightening torque 11 42 8AZ .

Remove oil return pipe in direction of arrow.

Installation note:

Replace O-ring.

Fig 1: Identifying Screws Of Oil Return Line

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Undo screws (1 and 2)

Tightening torque 11 53 10AZ .

Release coolant feed lines (3 and 4) if necessary with suitable pliers.

IMPORTANT: Do not place pliers on pipes. Risk of damage!

Fig 2: Identifying Coolant Feed Lines And Screws

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Release screws (1).

Tightening torque 11 53 3AZ .

Remove feed line (2).

Installation note:

Replace O-ring.

Fig 3: Identifying Feed Line And Screws

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Release screw (1).

Tightening torque 11 53 8AZ .

Release coolant return pipe at connection (2) if necessary with suitable pliers.

Release screw (3).

Tightening torque 11 53 9AZ .

Release coolant return pipe at connection (4) if necessary with suitable pliers.

Unfasten coolant return pipe.

Fig 4: Identifying Coolant Return Pipes And Screws

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Do not place pliers on pipes. Risk of damage!

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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Remove heat shield (1) in direction of arrow.

NOTE: Carefully swing out heat shield (1) in direction of arrow.

Risk of damage!

Coolant feed pipe can be removed with heat shield (1).

Fig 6: Removing Heat Shield

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Release screws (1).

Tightening torque 11 65 3AZ .

Set holder (2) down on cylinder head cover.

Fig 7: Identifying Holder And Screws

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Release screw (1).

Tightening torque 11 42 4AZ .

Detach oil feed line in direction of arrow.

Installation note:

Replace O-ring.

Fig 8: Detaching Oil Feed Line

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Release screw (1).

Tightening torque 11 42 5AZ .

Release oil pressure line (2) if necessary with suitable pliers.

IMPORTANT: Do not place pliers on pipes. Risk of damage!

Installation note:

Replace O-rings.

Fig 9: Identifying Oil Pressure Line And Screw

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Detach vacuum hose from vacuum unit (wastegate valve).

Unscrew nuts (1).

Tightening torque 11 65 1AZ .

Remove turbocharger towards top.

IMPORTANT: Do not misuse linkage of vacuum unit (wastegate valve) for transportation.

Risk of damage!

Fig 10: Identifying Nuts

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Release screw (2).

Tightening torque 11 42 5AZ .

IMPORTANT: Where necessary, to release the oil feed line (3), do not place pliers on the pipe.

Risk of damage!

If necessary, release oil feed line (3) with suitable pliers at connection and remove.

Fig 11: Identifying Turbocharger, Oil Feed Line, And Screw

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Installation note:

Replace O-rings.

Installation note:

Replace graphite sealing rings (1).

NOTE: Illustration shows turbocharger for cylinders 4 to 6.

Assemble engine.

Clear fault memory in DME control unit.

Check air intake system for leaks.

Observe DME instructions.