Removing and installing or replacing all valves (B48 and B46 engines) (Cooper Clubman S and JCW)

Special tools required: 

• 11 4 480

Preliminary work needed: 

• Remove CYLINDER HEAD .
• Remove EXHAUST CAMSHAFT .
• Remove INTAKE CAMSHAFT 
• Remove ROCKER ARMS 
• Remove VALVE SPRINGS 
• Remove VALVE STEM SEALS 

Arrangement: 

1. valve
2. Valve stem seal with spring cup, bottom
3. Valve spring
4. Top spring cup
5. Valve keys

If the valves are to be reused, set them down in special tool 11 4 480 in a tidy and orderly fashion.

Courtesy of BMW OF NORTH AMERICA, INC.

Required follow-up work: 

• Install VALVE STEM SEALS 
• Install VALVE SPRINGS 
• Install ROCKER ARM 
• Install INTAKE CAMSHAFT 
• Install EXHAUST CAMSHAFT 
• Installing the CYLINDER HEAD