11 65 030 Removing and installing/replacing exhaust turbocharger, left, cylinders 5-8 (N63O1)

Necessary preliminary tasks: 

• Remove both catalytic converters  . See 18 32 050 REMOVING AND INSTALLING/RENEWING CATALYTIC CONVERTERS FOR CYLINDERS 1-4 (N63 B40/B44 O 1) and 18 32 060 REMOVING AND INSTALLING/RENEWING CATALYTIC CONVERTERS FOR CYLINDERS 5-8 (N63 B40/B44 O 1) .

Pull off vacuum line (1) on vacuum unit.

Fig 1: Identifying Vacuum Line

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Release screw (1).

Tightening torque 11 42 5AZ .

Fig 2: Identifying Vacuum Line Screw

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Release banjo bolt (1).

Tightening torque 11 42 4AZ .

Lay engine oil pipe from turbocharger to one side.

Installation note: 

Replace all sealing rings. 

Fig 3: Identifying Turbocharger Banjo Bolt

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Release screw (1).

Tightening torque 11 53 3AZ .

Fig 4: Identifying Turbocharger Screw

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Release banjo bolt (1).

Tightening torque 11 53 2AZ .

Lay coolant return line to one side.

Installation note: 

Replace all sealing rings. 

Fig 5: Identifying Coolant Return Line Banjo Bolt

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Release screw (1).

Tightening torque: 11 53 3AZ .

Fig 6: Identifying Coolant Return Line Screw

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Release banjo bolt (1).

Tightening torque: 11 53 2AZ .

Installation note: 

Coolant feed line (2) can be left in engine compartment and does not have to be removed.

Replace all sealing rings. 

Fig 7: Identifying Coolant Feed Line Banjo Bolt

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Release screw (4) with a suitable tool.

Tightening torque 11 42 6AZ .

Fig 8: Identifying Oil Return Pipe With Screws

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Release screw (1).

Open V-band clamp (2).

Remove turbocharger with oil return line in upward direction.

Fig 9: Identifying Turbocharger V-Band Clamp And Screw

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Release screws (1).

Tightening torque 11 42 8AZ .

Remove oil return pipe (2).

Installation note: 

A new oil return pipe must always be fitted. 

Replace seal. 

Fig 10: Identifying Oil Return Pipe With Screws

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The thermal linear compensators (see arrows in illustration) on the oil return pipe (1) must not be mechanically deformed.

Installation note: 

Moisten oil return pipe at end with engine oil.

Fig 11: Locating Oil Return Pipe Thermal Linear Compensators

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Installation note: 

Replace O-rings on oil return cover (2). 

Fig 12: Identifying Oil Return Cover O-Rings

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Installation note: 

Replacing seal and V band clamps on exhaust manifold. 

Installation note: 

Check locating apparatus on exhaust manifold.

Fig 13: Locating Exhaust Manifold Gasket

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Position turbocharger with oil return line on exhaust manifold.

Position V-band clamp (2).

Insert screw (1).

Tightening torque 11 65 1AZ .

Fig 14: Identifying Turbocharger V-Band Clamp And Screw

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Installation note: 

The ends of the V-band clamp must rest parallel to each other.

Tightening torque 11 65 1AZ .

Fig 15: Identifying V-Band Clamp Ends

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Screw connection of V-band clamp is too loose: 

If you can see a gap between the ends of the V-band clamps, release and then repeat the screw connection.

Tightening torque 11 65 1AZ .

Fig 16: Locating Gap Between Ends Of Clamp

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Screw connection of V-band clamp is too tight: 

If the ends of the V-band clamp are positioned under each other, release and then repeat the screw connection.

Tightening torque 11 65 1AZ .

Fig 17: Locating V-Band Clamp End

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Assemble engine.

Check vacuum connections.

Observe BMW diagnosis instructions.

1. Complete vehicle
2. Drive
3. Engine electrical system
4. Air supply
5. Charging pressure control