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Home >> BMW >> 2021 >> 840i 2D Convertible >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Camshafts -- Repair (G14, G15, & G16) (1 Of 4) >> 11 31 Camshafts >> 11 31 025 Removing and installing/replacing intake camshaft (840i xDrive coupe/convertible/Gran Coupe sedan) >> Install intake camshaft

Install intake camshaft

G12728566Courtesy 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.
G12728554Courtesy of BMW OF NORTH AMERICA, INC.

The illustration shows the screw with a tensile strength of 10.9. 

G12700665Courtesy of BMW OF NORTH AMERICA, INC.
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

Intake camshaft to cylinder head
M6
Tensile strength of screw 8.8 
Joining torque  9.6 Nm
tightening torque  9.6 Nm
M6
Tensile strength of screw 10.9 
Joining torque  11.8 Nm
tightening torque  11.8 Nm

Follow-up work