Installing both exhaust turbochargers for cylinders 1 to 6 (cylinder head removed)

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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
Damage of the electric wastegate valve controller .
Excessive force when removing and installing a jammed exhaust turbocharger may damage the electric wastegate valve controller .

Do not pull on the electrical wastegate valve controller or on the coupling rod.
Apply force only at the turbine housing and exhaust manifold.
Do not pull on the compressor housing.

Check

NOTE: TECHNICAL INFORMATION
When replacing the stud bolts, they must be coated with screw locking agent (Loctite 270).

Check if the stud bolts (arrows) fit correctly on cylinder head (1).

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TIGHTENING TORQUE SPECIFICATIONS

Stud bolt on cylinder head
M7X58	tightening torque	12 Nm

SEALING COMPOUND DESCRIPTION

Loctite 270

10 ml, Bottle

83192210337

Result

» Loose stud bolt (1).

Measure

Replace the stud bolt (1).

Check the cylindrical pins in the marked area on the cylinder head (1) for damage, replace if necessary.

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NOTE: RISK OF DAMAGE
Damage to the surface .
The use of metal-cutting tools (e.g., emery cloths) for cleaning surfaces can damage them and lead to leaks and/or engine damage .

Do not use any metal-cutting tools.

Clean the sealing surfaces (1) on the cylinder head using special tool 0 495 102 (11 4 470) .

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: RISK OF DAMAGE
Damage to the surface .
The use of metal-cutting tools (e.g., emery cloths) for cleaning surfaces can damage them and lead to leaks and/or engine damage .

Do not use any metal-cutting tools.

Clean sealing surfaces (2) on exhaust turbocharger (1) for cylinders 1 to 3 using special tool 0 495 102 (11 4 470) .

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: RISK OF DAMAGE
Damage to the surface .
The use of metal-cutting tools (e.g., emery cloths) for cleaning surfaces can damage them and lead to leaks and/or engine damage .

Do not use any metal-cutting tools.

Clean sealing surfaces (2) on exhaust turbocharger (1) for cylinders 4 to 6 using special tool 0 495 102 (11 4 470) .

Courtesy of BMW OF NORTH AMERICA, INC.
Replace the seals (1).
Parts: Seals
Insert seals (1) in the marked area and install them.
Ensure that the seals (1) are installed correctly in the cylindrical pins in the marked area.

Courtesy of BMW OF NORTH AMERICA, INC.
Guide in and install exhaust turbocharger (1) for cylinders 1 to 3.
Secure exhaust turbocharger (1) for cylinders 1 to 3 to prevent it from falling.

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: TECHNICAL INFORMATION
Note the installation position of the component. The component can be installed in various installation positions.

Insert and install the reinforcement plate (1).
The original BMW part number of reinforcement plate (1) must be legible in the marked area .

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: TECHNICAL INFORMATION
When assembling, it is essential to observe screwing sequences and tightening torques.
Failure to comply with the regulations can lead to leaks and damage.

Replace nuts (1) to (4).
Parts: Nuts
Join and tighten nuts in the sequence (1) to (4).

Fig 1: Exhaust Turbocharger Nuts Tightening Sequence

Courtesy of BMW OF NORTH AMERICA, INC.

TIGHTENING TORQUE SPECIFICATIONS

Exhaust turbocharger to cylinder head
M7 Observe tightening sequence! Replace nuts.	1. Joining torque	10 Nm
	2. tightening torque	10 Nm
	3. Joining torque	16 Nm
	4. tightening torque	16 Nm
	5. Tightening torque	16 Nm

Guide in and install exhaust turbocharger (1) for cylinders 4 to 6.
Secure exhaust turbocharger (1) for cylinders 4 to 6 to prevent it from falling.

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: TECHNICAL INFORMATION
Note the installation position of the component. The component can be installed in various installation positions.

Insert and install the reinforcement plate (1).
The original BMW part number of the reinforcement plate (1) must be legible in the marked area .

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: TECHNICAL INFORMATION
When assembling, it is essential to observe screwing sequences and tightening torques.
Failure to comply with the regulations can lead to leaks and damage.

Replace nuts (1) to (4).
Parts: Nuts
Join and tighten nuts in the sequence (1) to (4).

Fig 2: Exhaust Turbocharger Nuts Tightening Sequence

Courtesy of BMW OF NORTH AMERICA, INC.

TIGHTENING TORQUE SPECIFICATIONS

Exhaust turbocharger to cylinder head
M7 Observe tightening sequence! Replace nuts.	1. Joining torque	10 Nm
	2. tightening torque	10 Nm
	3. Joining torque	16 Nm
	4. tightening torque	16 Nm
	5. Tightening torque	16 Nm

Feed in and install the heat shield (1).
Replace the bolts (arrows).
Parts: Screws
Tighten screws (arrows).

TIGHTENING TORQUE SPECIFICATIONS

Heat shield to cylinder head
M8X17.5 Replace screws.	tightening torque	10 Nm

Courtesy of BMW OF NORTH AMERICA, INC.