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Home >> BMW >> 2017 >> 530i >> Repair and Diagnosis (Single Page) >> Engine Mechanical >> Lubrication System >> Engine - Cylinder Head/Oil Pan - Repair (G30) >> 11 12 Cylinder Head With Lid >> 11 12 502 Disassemble and assemble cylinder head (540i, 2017-2020, 540i, 2021-2022, 540i xDrive, 2021-2022) >> Installing the exhaust turbocharger (cylinder head removed)

Installing the exhaust turbocharger (cylinder head removed)

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 electric wastegate valve controller.
  • Apply force only at the turbine housing and exhaust manifold.
  • Do not pull on the compressor housing.
TECHNICAL DATA - SCREW-IN DEPTH OF UPPER STUD BOLTS SPECIFICATION

Screw-in depth of upper stud bolts on cylinder head
Dimension A  30 mm
G14228704Courtesy 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.
G14228689Courtesy 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.
NOTE: Insert the screws in steps of 360 degrees.
  • Tighten the nuts (1) and screws (2).
G14228687Courtesy of BMW OF NORTH AMERICA, INC.
TIGHTENING TORQUES SPECIFICATION

Exhaust turbocharger to cylinder head
M7
Replace screws.
Replace nuts.
1. Joining torque  5 Nm
2. tightening torque  18 Nm
3. tightening torque  18 Nm
TIGHTENING TORQUES SPECIFICATION

Heat shield of exhaust turbocharger to cylinder head top
M8X12
Replace screws.
Tightening torque  19 Nm
G14228686Courtesy of BMW OF NORTH AMERICA, INC.