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Home >> BMW >> 2021 >> 750i xDrive >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Engine - Cylinder Head/Valve Cover (1 Of 6) - Repair (G12) >> 11 12 Cylinder Head, Valve Cover >> 11 12 502 Disassemble and assemble cylinder head (cylinder head removed) (without removal of valves) (740i 2016-2022, 740i xDrive 2017-2022, 745e xDrive PHEV 2020-2022) >> Install all valve springs

Install all valve springs

CAUTION: Spring preload. 
Injury hazard! 
  • The use of the specified special tool (tool) is mandatory.
  • Carry out the described steps properly.
NOTE: The description is provided only at one component. The procedure is the same for all other components.
  • Note the installation position of the valve spring.
NOTE: The valve spring must be installed so that the larger diameter (Y) points towards the lower spring plate.
  • Make sure that the intake valves and the exhaust valve are not interchanged.
NOTE: The valve springs (1) are color-coded (2). Color for the intake valves: Green
  • Note the installation position of the valve spring.
G12701102Courtesy of BMW OF NORTH AMERICA, INC.
NOTE: The valve spring must be installed so that the larger diameter (Y) points towards the lower spring plate.
  • Make sure that the intake valves and the exhaust valve are not interchanged.
NOTE: The valve springs (1) are color-coded (2). Color for the exhaust valves: Green/Yellow
G12701103Courtesy of BMW OF NORTH AMERICA, INC.
G12728727Courtesy of BMW OF NORTH AMERICA, INC.
NOTE: TECHNICAL INFORMATION 
Wear safety goggles.
G14191381Courtesy of BMW OF NORTH AMERICA, INC.