Prepare for the installation of the exhaust turbocharger

• Check the screw-in depth (A)  of the upper stud bolt (1)  , if necessary screw in the stud bolt (1)  further and unscrew it.
• Check the screw-in depth (B)  of the upper stud bolt (2), if necessary screw in the stud bolt (2) further and unscrew it.
  TECHNICAL DATA SPECIFICATION
  
  

  Screw-in depth of upper stud bolts on cylinder head
  	Dimension A	30 mm
  	Dimension B	26 mm

  Courtesy of BMW OF NORTH AMERICA, INC.

• If necessary, fix the stud bolt (1)  with screw locking agent.
  ADHESIVE SPECIFICATION
  
  

  Screw lock Loctite 273, high strength

  50 ml, Bottle

  83190443083

  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 on exhaust manifold and cylinder head (1) with special tool 0 495 102 (11 4 470) .

  Courtesy of BMW OF NORTH AMERICA, INC.

• Check the nuts for correct fit in sequence (1)  to (5)  .

TIGHTENING TORQUES SPECIFICATION

Trim strip at the cylinder head
M7	Tightening torque	18Nm

Fig 1: Trim Strip On Cylinder Head Nuts Tightening Sequence

Courtesy of BMW OF NORTH AMERICA, INC.