Replacing the valve stem seals

Preliminary work

Refer to REMOVING THE EXHAUST TURBOCHARGER (CYLINDER HEAD REMOVED) .
Refer to MOUNTING THE CYLINDER HEAD ON THE ASSEMBLY JIG .
Refer to ADJUSTING THE ECCENTRIC SHAFT TO THE MINIMUM LIFT (CYLINDER HEAD REMOVED) .
Refer to REMOVING THE TORSION SPRINGS (CYLINDER HEAD REMOVED) .
Refer to REMOVING ALL GATES .
Refer to REMOVING ALL INTERMEDIATE LEVERS .
Refer to REMOVING THE INTAKE CAMSHAFT (CYLINDER HEAD REMOVED) .
Refer to REMOVING THE SERVOMOTOR FOR THE ECCENTRIC SHAFT (CYLINDER HEAD REMOVED) .
Refer to REMOVING THE ECCENTRIC SHAFT (CYLINDER HEAD REMOVED) .
Refer to REMOVING THE EXHAUST CAMSHAFT (CYLINDER HEAD REMOVED) .
Refer to REMOVING ALL ROLLER CAM FOLLOWERS .
Refer to REMOVING ALL VALVE SPRINGS .

NOTE: RISK OF DAMAGE
Contaminant or foreign body.
Contamination can result in malfunctions, loss of function or leaks.

Adhere to the utmost cleanliness.
Protect components from contamination e.g. by covering.
Close off line connections with seal plugs.

NOTE: The description is provided only at one component. The procedure is the same for all other components.

Remove the valve stem seal (1) in the arrow direction using the special tool 0 490 796 (11 1 480) .

Courtesy of BMW OF NORTH AMERICA, INC.

Installing valve stem seals
NOTE:
RISK OF DAMAGE
Contaminant or foreign body.
Contamination can result in malfunctions, loss of function or leaks.
- Adhere to the utmost cleanliness.
- Protect components from contamination e.g. by covering.
- Close off line connections with seal plugs.
NOTE: The description is provided only at one component. The procedure is the same for all other components.
Remove oil and dirt from the contact surface (1) .

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: TECHNICAL INFORMATION
As an alternative to special tool 0 490 797 (11 1 960) , the assembly sleeves delivered with the spare part can be used (see applicable BMW parts catalogue).
Make sure that the special tool 0 490 797 (11 1 960) or the assembly sleeves are used when installing the valve stem seal.

Courtesy of BMW OF NORTH AMERICA, INC.
Guide in and install special tool 0 490 797 (11 1 960) or assembly sleeves on valve (1) .

Courtesy of BMW OF NORTH AMERICA, INC.
Replace the valve stem seal (1) or assembly sleeves.
Parts : Valve stem seal, assembly sleeves
Guide in and install valve stem seal (1) on special tool 0 490 797 (11 1 960) or assembly sleeves.

Courtesy of BMW OF NORTH AMERICA, INC.
Guide out and remove special tool 0 490 797 (11 1 960) or assembly sleeves .

Courtesy of BMW OF NORTH AMERICA, INC.
Prepare special tool 0 493 249 (11 6 380) .

Courtesy of BMW OF NORTH AMERICA, INC.
Press the valve stem seal (1) onto the cylinder head 0 493 249 (11 6 380) up to the stop using special tool.

Courtesy of BMW OF NORTH AMERICA, INC.
Make sure that the valve stem seal (1) is correctly positioned on cylinder head (2) .

Courtesy of BMW OF NORTH AMERICA, INC.

Follow-up work

Refer to INSTALLING ALL VALVE SPRINGS .
Refer to INSTALLING ALL ROLLER CAM FOLLOWERS .
Refer to INSTALLING EXHAUST CAMSHAFT (CYLINDER HEAD REMOVED) .
Refer to INSTALLING THE ECCENTRIC SHAFT (CYLINDER HEAD REMOVED) .
Refer to INSTALLING THE SERVOMOTOR FOR THE ECCENTRIC SHAFT (CYLINDER HEAD REMOVED) .
Refer to INSTALLING THE INTAKE CAMSHAFT (CYLINDER HEAD REMOVED) .
Refer to CHECKING THE INTERMEDIATE LEVER CLASSIFICATION .
Refer to INSTALLING ALL INTERMEDIATE LEVERS .
Refer to INSTALLING ALL GATES .
Refer to ADJUSTING THE ECCENTRIC SHAFT TO THE MINIMUM LIFT (CYLINDER HEAD REMOVED) .
Refer to CHECKING THE POSITION OF THE INTAKE CAMSHAFT (CYLINDER HEAD REMOVED) .
Refer to INSTALLING THE TORSION SPRINGS (CYLINDER HEAD REMOVED) .
Refer to REMOVING THE CYLINDER HEAD FROM THE ASSEMBLY JIG .
Refer to INSTALLING THE EXHAUST TURBOCHARGER (CYLINDER HEAD REMOVED) .