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Home >> BMW >> 2025 >> M240i >> Repair and Diagnosis >> External Pages >> Different car >> Section 247 (Cylinder Head -- Repair M4 (G82 & G83)) >> 11 12 Cylinder Head With Lid >> 11 12 502 Disassemble and assemble cylinder head (cylinder head removed) (without removal of valves) (M4 2021-2023) >> Install all valve springs

Install all valve springs

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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: Install the valve spring so that the larger diameter (Y) points to the bottom spring plate.
  • Make sure that the intake valves are not switched with the exhaust valves.
NOTE: Valve springs (1) are marked in color (2). Color for the intake valves: Yellow/Light blue 
  • Note the installation position of the valve spring.
G15329510Courtesy of BMW OF NORTH AMERICA, INC.
NOTE: Install the valve spring so that the larger diameter (Y) points to the bottom spring plate.
  • Make sure that the intake valves are not switched with the exhaust valves.
NOTE: Valve springs (1) are marked in color (2). Color for the exhaust valves:  green/yellow
G15329511Courtesy of BMW OF NORTH AMERICA, INC.
G15329512Courtesy of BMW OF NORTH AMERICA, INC.
NOTE: TECHNICAL INFORMATION 
Wear safety goggles.
G15329516Courtesy of BMW OF NORTH AMERICA, INC.