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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 12 729 Checking cylinder head for watertightness (Cylinder head disassembled) (740e xDrive PHEV 2017-2019) >> Checking cylinder head for watertightness

Checking cylinder head for watertightness

TIGHTENING TORQUE SPECIFICATIONS

Cylinder head to special tool 2 361 215 
  Tightening torque  35 Nm
G12700787Courtesy of BMW OF NORTH AMERICA, INC.
G12700788Courtesy of BMW OF NORTH AMERICA, INC.
TIGHTENING TORQUE SPECIFICATIONS

Venting connector/special tool to cylinder head 
M10 Tightening torque  18 Nm
G12700789Courtesy of BMW OF NORTH AMERICA, INC.

Check 

TECHNICAL DATA SPECIFICATION

Check for cylinder head watertightness 
  Temperature of the cylinder head  60°C
TECHNICAL DATA SPECIFICATION

Check for cylinder head watertightness 
  Testing pressure  max. 3.0 bar

Result 

» Air bubbles form.

Measure 

TIGHTENING TORQUE SPECIFICATIONS

Venting connector/special tool to cylinder head 
M10 Tightening torque  18 Nm
G12700788Courtesy of BMW OF NORTH AMERICA, INC.
TIGHTENING TORQUE SPECIFICATIONS

Trim strip at the cylinder head 
M7 1) Joining torque  10 Nm
2) Joining torque  16 Nm
3) tightening torque  18 Nm
G12700786Courtesy of BMW OF NORTH AMERICA, INC.