Installing both turbochargers

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

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

Courtesy of BMW OF NORTH AMERICA, INC.
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 DESCRIPTION

Technically suitable engine oils for BMW Group engines

Courtesy of BMW OF NORTH AMERICA, INC.
Loosen screws (2) .
Remove the oil return line (1) .
Ensure that the sealing surfaces in the area of the oil return line are planar and free from oil and grease.

Courtesy of BMW OF NORTH AMERICA, INC.
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) .

Courtesy of BMW OF NORTH AMERICA, INC.
Position the oil return line (1) .

Screws (2) must be tightened with the aid of an support person.

TIGHTENING TORQUE SPECIFICATIONS

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

Courtesy of BMW OF NORTH AMERICA, INC.

Feed in and install the turbocharger (2) at right with the coolant lines and oil return line.
During installation of 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.

Courtesy of BMW OF NORTH AMERICA, INC.
Fasten the wiring harness mounting (1) to the holder (2) .

Courtesy of BMW OF NORTH AMERICA, INC.
Insert the holder (2) .

Tighten down screws (1) .

TIGHTENING TORQUE SPECIFICATIONS

Holder of sensor system
M6x16 screw	tightening torque	8 Nm

Courtesy of BMW OF NORTH AMERICA, INC.

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

Tighten down screw (1) .

TIGHTENING TORQUE SPECIFICATIONS

Turbocharger to exhaust manifold
V-band clamp Replace V-band clamp.	Tightening torque	20 Nm

Courtesy of BMW OF NORTH AMERICA, INC.

Tighten the screw (1) on the oil return pipe (2) .

TIGHTENING TORQUE SPECIFICATIONS

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

Courtesy of BMW OF NORTH AMERICA, INC.

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

Courtesy of BMW OF NORTH AMERICA, INC.
Replace sealing ring (1) of the coolant line (2) .
Parts: Sealing ring

Courtesy of BMW OF NORTH AMERICA, INC.
Connect coolant lines (4) .
Connect coolant lines (3) .

Tighten down screws (2) .

TIGHTENING TORQUE SPECIFICATIONS

Coolant line from turbocharger to bracket
M6x30	tightening torque	8 Nm

Courtesy of BMW OF NORTH AMERICA, INC.

Remove the lint-free rag (1) .
Connect connectors (1) and lock.

Courtesy of BMW OF NORTH AMERICA, INC.
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 without a fitting aid (bridge), both sealing rings are replaced.
Position screw (1) with the sealing ring or sealing rings (2) on the oil feed line.

Courtesy of BMW OF NORTH AMERICA, INC.
Position oil feed line.
Screw in the banjo bolt (2) several threads.
Hand-tighten the bolt (1) .

Tighten the banjo bolt (2) .

TIGHTENING TORQUE SPECIFICATIONS

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

Courtesy of BMW OF NORTH AMERICA, INC.

Tighten down screw (1) .

TIGHTENING TORQUE SPECIFICATIONS

Oil feed line to turbocharger
M6x16	tightening torque	10 Nm

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

Courtesy of BMW OF NORTH AMERICA, INC.
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.

Courtesy of BMW OF NORTH AMERICA, INC.

ENGINE OIL DESCRIPTION

Technically suitable engine oils for BMW Group engines
Loosen screws (2) .
Remove the oil return line (1) .
Ensure that the sealing surfaces in the area of the oil return line are planar and free from oil and grease.

Courtesy of BMW OF NORTH AMERICA, INC.
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) .

Courtesy of BMW OF NORTH AMERICA, INC.
Position the oil return line (1) .

Screws (2) must be tightened with the aid of an support person.

TIGHTENING TORQUE SPECIFICATIONS

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

Courtesy of BMW OF NORTH AMERICA, INC.

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.

Courtesy of BMW OF NORTH AMERICA, INC.
Replace the V-clip (2) .
Parts: V-band clamp
Position V-clip (2) .

Tighten down screw (1) .

TIGHTENING TORQUE SPECIFICATIONS

Turbocharger to exhaust manifold
V-band clamp Replace V-band clamp.	Tightening torque	20 Nm

Courtesy of BMW OF NORTH AMERICA, INC.

Tighten the screw (1) on the oil return pipe (2) .

TIGHTENING TORQUE SPECIFICATIONS

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

Courtesy of BMW OF NORTH AMERICA, INC.

Feed the coolant return line (2) above the coolant feed line (3) .
Connect connectors (1) and lock.

Courtesy of BMW OF NORTH AMERICA, INC.
Replace sealing ring (1) of the coolant line (2) .
Parts: Sealing ring

Courtesy of BMW OF NORTH AMERICA, INC.
Connect coolant lines (4) .
Connect coolant lines (3) .

Tighten down screws (2) .

TIGHTENING TORQUE SPECIFICATIONS

Coolant line from turbocharger to bracket
M6x30	tightening torque	8 Nm

Courtesy of BMW OF NORTH AMERICA, INC.

Remove the lint-free rag (1) .
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 without a fitting aid (bridge), both sealing rings are replaced.
Position screw (1) with the sealing ring or sealing rings (2) on the oil feed line.

Courtesy of BMW OF NORTH AMERICA, INC.

Determining the screw type and selecting the appropriate socket wrench:

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

Courtesy of BMW OF NORTH AMERICA, INC.

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

Tighten the banjo bolt (2) .

TIGHTENING TORQUE SPECIFICATIONS

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

Courtesy of BMW OF NORTH AMERICA, INC.

Tighten down screw (1) .

TIGHTENING TORQUE SPECIFICATIONS

Oil feed line to turbocharger
M6x16	tightening torque	10 Nm

Position the retaining plate (2) .
Secure the wiring harness (1) on the retaining plate (2) .

Courtesy of BMW OF NORTH AMERICA, INC.
Position the retaining plate (2) .

Tighten down screws (2) .

TIGHTENING TORQUE SPECIFICATIONS

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

Courtesy of BMW OF NORTH AMERICA, INC.

Connect connectors (3) and lock.
Position union nut (2) and turn it a few times.
Position screw (1) and turn it a few times.

Tighten union nut (2) .

TIGHTENING TORQUE SPECIFICATIONS

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

Courtesy of BMW OF NORTH AMERICA, INC.

Tighten down screw (1) .

TIGHTENING TORQUE SPECIFICATIONS

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

Connect connectors (1) and lock.

Courtesy of BMW OF NORTH AMERICA, INC.
Connect connectors (1) and lock.

Courtesy of BMW OF NORTH AMERICA, INC.