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Home >> BMW >> 2025 >> 230i >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Camshafts -- Repair (G42) >> 11 31 Camshafts >> 11 31 028 Removing and installing/replacing exhaust camshaft (230i xDrive) >> Install exhaust camshaft

Install exhaust camshaft

G15904993Courtesy of BMW OF NORTH AMERICA, INC.
G15904996Courtesy of BMW OF NORTH AMERICA, INC.
G15904997Courtesy 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.
G15904998Courtesy of BMW OF NORTH AMERICA, INC.
NOTE: The exhaust camshaft bearing caps are legibly labeled from the intake side and marked with A1, A2  and A  .
NOTE: Exhaust camshaft bearing cap A  is a thrust bearing.
G15905000Courtesy 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.
Fig 1: Exhaust Camshaft Bearing Cap Screws Tightening Sequence
G15905001Courtesy of BMW OF NORTH AMERICA, INC.
TIGHTENING TORQUES SPECIFICATION

Exhaust 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
G15905002Courtesy of BMW OF NORTH AMERICA, INC.

Follow-up work