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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 exhaust camshaft (cylinder head removed)

Install exhaust camshaft (cylinder head removed)

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G15329526Courtesy of BMW OF NORTH AMERICA, INC.
NOTE: RISK OF DAMAGE 
Engine damage caused by incorrectly installed bearing shells and bearing brackets  .
If the bearing shells and bearing brackets are installed incorrectly, then engine damage can occur  .
  • Always install all bearing shells and bearing brackets in the same position from which they were removed.
G15329527Courtesy of BMW OF NORTH AMERICA, INC.
NOTE: RISK OF DAMAGE 
Engine damage caused by incorrectly installed bearing shells and bearing brackets  .
If the bearing shells and bearing brackets are installed incorrectly, then engine damage can occur  .
  • Always install all bearing shells and bearing brackets in the same position from which they were removed.
G15329528Courtesy of BMW OF NORTH AMERICA, INC.
NOTE: TECHNICAL INFORMATION 
The camshaft bearing caps must not be mixed up. The camshaft bearing caps must be installed in the installation position from which they were removed.
NOTE: TECHNICAL INFORMATION 
The camshaft is under tension due to the valve springs. Tighten or loosen each screw on the camshaft bearing caps in the prescribed sequence only by half a turn. Repeat procedure.
TIGHTENING TORQUE SPECIFICATIONS

Exhaust camshaft to cylinder head
M6
Tensile strength of screw 8.8 
Tightening torque  8.6 Nm
M6
Tensile strength of screw 10.9 
Tightening torque  11.8 Nm
G15329532Courtesy of BMW OF NORTH AMERICA, INC.