Installing the left and right turbocharger

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WARNING: Hot surfaces .
Risk of burning!

Perform all work only on components that have cooled down.

CAUTION: Heavy component .
Heavy components can lead to injury or damage .

Remove and install heavy components with the aid of another person/other persons.

NOTE: RISK OF DAMAGE
Contaminant or foreign body .
Contamination can result in malfunctions, loss of function or leaks .

Adhere to the utmost cleanliness.
Protect components from contamination e.g. by covering.
Close off line connections with seal plugs.

NOTE: TECHNICAL INFORMATION
The sealing surfaces must be free of oil, grease and cleaning agents.

Prepare for the installation of the turbocharger

Check the oil feed lines and oil return lines for contamination or obstruction, clean or replace if necessary.
If the oil feed lines or oil return lines are heavily contaminated, it is recommended that the engine oil and oil filter are changed.
If installed: Check the coolant feed lines and coolant return lines for the turbocharger for contamination or obstruction and clean or replace as needed.
Check the screw connections and plug connections of all lines for accuracy.
Check air cleaner for contamination and clean or replace as needed.
Check correct functioning of crankcase ventilation.
Replace all gaskets.
Parts: Seals

Loosen screws (2).
Remove the oil return line (1).
Ensure that the sealing surfaces of the oil return line (1) are flat and free of grease.

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Replace oil return line (3) after each disassembly of the turbocharger.
Parts: Oil return line
Replace the seal (1).
Parts: Seal
Replace screws (2).
Parts: Screws
Position screws (2) in oil return line (3) .
Position the seal (1) on the screws (2).
NOTE: TECHNICAL INFORMATION
Conduct the following operation with the assistance of a second person.

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Position the oil return line (1).

Tighten down screws (2).

TIGHTENING TORQUES SPECIFICATION

Oil return line at the exhaust turbocharger
M6x16 Replace screws.	Joining torque	5 Nm
	Angle of rotation	60°

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Replace the seal (1) on the right exhaust manifold.
Parts: Seal
Check the pin (arrow) for damage, replace exhaust manifold if necessary.

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Make sure that the O-ring (1) does not fall into the oil duct in the engine block .
Replace O-ring (1).
Parts: O-ring

If the O-ring (1) cannot be disassembled, the oil return lid must be disassembled.
Coat O-ring (1) with engine oil.
ENGINE OIL SPECIFICATION

Technically suitable engine oils for BMW Group engines
Replace the seal (1) on the left exhaust manifold.
Parts: Seal
Check the pin (arrow) for damage, replace exhaust manifold if necessary.

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Make sure that the O-ring (1) does not fall into the oil duct in the engine block .
Replace O-ring (1).
Parts: O-ring

If the O-ring (1) cannot be disassembled, the oil return lid must be disassembled.
Coat O-ring (1) with engine oil.
ENGINE OIL SPECIFICATION

Technically suitable engine oils for BMW Group engines

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Feed in and install the turbocharger (2) at right with the coolant lines and oil return line.
When installing the right turbocharger (2), make sure that the oil return line is correctly positioned in the oil return cover .
Make sure the oil feed line (1) is positioned correctly.

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Replace the V-clip (2).
Parts: V-band clamp
Position V-clip (2).

Tighten down screw (1).

TIGHTENING TORQUES SPECIFICATION

Exhaust turbocharger to exhaust manifold
V-ribbon clip Replace V-ribbon clip.	tightening torque	13 Nm

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Tighten the screw (1) from the oil return line (2) of the turbocharger at right.

TIGHTENING TORQUES SPECIFICATION

Oil return line to oil return cover
M6	tightening torque	10 Nm

Connect connectors (1) and lock.
The connector (1) must engage audibly.

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Replace the screw (1).
Parts: Screw
Replace the sealing ring or sealing rings (2).
Parts: Sealing ring or sealing rings
Make sure that, when installing sealing rings (2) without installation aid (bar), both sealing rings (2) are replaced .
Position screw (1) with the sealing ring or sealing rings (2) on the oil feed line.
Position oil feed line.
Turn in the banjo bolt (2) several rotations.

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Hand-tighten the bolt (1).

Tighten the banjo bolt (2).

TIGHTENING TORQUES SPECIFICATION

Banjo bolt for oil feed line to exhaust turbocharger
M10x1 Replace the screw and sealing rings.	Joining torque	8 Nm
	Angle of rotation	70°

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Tighten down screw (1).

TIGHTENING TORQUES SPECIFICATION

Oil feed line to exhaust turbocharger
M6x16	tightening torque	10 Nm

Feed in and install the turbocharger (2) at left with the coolant lines and oil return line.
When installing the right turbocharger (2), make sure that the oil return line is correctly positioned in the oil return cover .
Connect connectors (1) and lock.
The connector (1) must engage audibly.

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Replace the V-clip (2).
Parts: V-band clamp
Position V-clip (2).

Tighten down screw (1).

TIGHTENING TORQUES SPECIFICATION

Exhaust turbocharger to exhaust manifold
V-ribbon clip Replace V-ribbon clip.	tightening torque	13 Nm

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Tighten the screw (1) from the oil return line (2) of the turbocharger at left.

TIGHTENING TORQUES SPECIFICATION

Oil return line to oil return cover
M6	tightening torque	10 Nm

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Replace the screw (1).
Parts: Screw
Replace the sealing ring or sealing rings (2).
Parts: Sealing ring or sealing rings
Make sure that, when installing sealing rings (2) without installation aid (bar), both sealing rings (2) are replaced .
Position screw (1) with the sealing ring or sealing rings (2) on the oil feed line.

Determining the screw type and selecting the appropriate socket wrench:

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Screw type	Matching socket wrench
Hexagon screw (3)	Commercial socket wrench (1)
Multi-tooth screw (4)	Multi-tooth socket wrench (2)

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Position oil feed line.
Turn in the banjo bolt (2) several rotations.
Hand-tighten the bolt (1).

Tighten the banjo bolt (2).

TIGHTENING TORQUES SPECIFICATION

Banjo bolt for oil feed line to exhaust turbocharger
M10x1 Replace the screw and sealing rings.	Joining torque	8 Nm
	Angle of rotation	70°

Tighten down screw (1).

TIGHTENING TORQUES SPECIFICATION

Oil feed line to exhaust turbocharger
M6x16	tightening torque	10 Nm

Insert and install retaining plate (3).

Tighten down screws (2).

TIGHTENING TORQUES SPECIFICATION

Holder control sensor cable to the cylinder head cover
M6x16	tightening torque	8 Nm

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Secure clamps (1).
Attach the union nut (2) and screw in a few revolutions.
Attach the screw (1) and screw in a few revolutions.

Tighten union nut (2).

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TIGHTENING TORQUES SPECIFICATION

Fuel delivery line to high pressure pump
M14	Tightening torque	30 Nm

Tighten down screw (1).

TIGHTENING TORQUES SPECIFICATION

Fuel supply line to cylinder head cover/cylinder head
M6x16	tightening torque	10 Nm

Replace sealing ring (1) of the coolant line (2).
Parts: Sealing ring

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Connect coolant lines (4).
Connect coolant lines (3).

Tighten down screws (2).

TIGHTENING TORQUES SPECIFICATION

Coolant line from exhaust turbocharger to bracket
M6x30	tightening torque	8 Nm

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Remove the lint-free rag (1).

Follow-up work

Refer to INSTALLING RIGHT CLEAN AIR PIPE .
Refer to CONNECTING THE RIGHT CHARGE AIR LINE TO THE TURBOCHARGER .
Refer to INSTALLING LEFT CLEAN AIR PIPE .
Refer to CONNECTING THE LEFT CHARGE AIR LINE TO THE TURBOCHARGER .
Refer to CONNECTING THE COOLANT HOSES TO THE HIGH-TEMPERATURE COOLANT RADIATOR .
Refer to INSTALLING THE CATALYTIC CONVERTER FOR CYLINDERS 5 TO 8 .
Refer to INSTALLING RIGHT HEAT SHIELD .
Refer to INSTALLING LEFT HEAT SHIELD .
Refer to INSTALLING EXHAUST SYSTEM .
Refer to INSTALLING THE LEFT AND RIGHT REAR DIFFUSER .
Refer to INSTALLING THE REAR LEFT AND RIGHT TENSION STRUT .
Refer to INSTALLING THE LEFT AND RIGHT UNDERSHIELD (TANK COVER) .
Refer to INSTALLING THE STIFFENING PLATE .
Refer to INSTALLING FRONT UNDERBODY PROTECTION .
Refer to TIGHTENING SCREW BETWEEN THE LEFT AND RIGHT HEAT SHIELD .
Refer to INSTALLING HEAT SHIELD, TOP .
Refer to INSTALLING THE RIGHT-HAND ENGINE VENTILATION LINE AND THE CRANKCASE VENTILATION INTAKE PIPE .
Refer to INSTALLING THE LEFT ENGINE VENTILATION LINE .
Refer to INSTALLING OXYGEN SENSOR ON THE LEFT .
Refer to INSTALLING THE RIGHT MONITORING OXYGEN SENSOR .
Refer to INSTALLING FAN COWL .
Refer to INSTALLING THE RIGHT UNFILTERED-AIR DUCT .
Refer to INSTALLING THE LEFT UNFILTERED-AIR DUCT .
Refer to INSTALLING INTAKE FILTER HOUSING .
Refer to INSTALLING THE RIGHT LAMBDA OXYGEN SENSOR .
Refer to INSTALLING THE LEFT LAMBDA OXYGEN SENSOR .
Refer to INSTALLING THE RIGHT STRUT BRACE .
Refer to INSTALLING THE STRUT BRACE .
Refer to INSTALLING ACOUSTIC COVER .
Refer to INSTALLING THE REAR TOP CROSS CONNECTION .
Refer to INSTALLING TENSION STRUT ON LEFT AND RIGHT SHOCK TOWER .
Refer to INSTALLING UPPER CROSS CONNECTION .
Refer to INSTALLING THE COVER IN THE ENGINE COMPARTMENT AT TOP LEFT AND RIGHT .
Refer to FILLING AND VENTING THE HIGH-TEMPERATURE COOLANT CIRCUIT .