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Home >> BMW >> 2020 >> 745e xDrive >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Engine - Cylinder Head/Valve Cover (2 Of 6) - Repair (G12) >> 11 12 Cylinder Head, Valve Cover >> 11 12 161 replace cylinder head (745e xDrive PHEV 2020-2022) >> Installing the turbocharger (cylinder head removed)

Installing the turbocharger (cylinder head removed)

NOTE: RISK OF DAMAGE 
Damage of the electric wastegate valve controller. 
Excessive force when removing and installing a jammed 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.
TECHNICAL DATA 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: Join nuts and screws in 360 degree increments.
TIGHTENING TORQUE SPECIFICATIONS

Turbocharger to cylinder head 
M7
Replace screws. Replace nuts.
1) Joining torque  5 Nm
2) tightening torque  18 Nm
3) tightening torque  18 Nm
G14228687Courtesy of BMW OF NORTH AMERICA, INC.
TIGHTENING TORQUE SPECIFICATIONS

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