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 REMOVE ALL ROLLER CAM FOLLOWERS .
Refer to REMOVE ALL VALVE SPRINGS .

Remove 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 for one component only. The procedure is identical for all further 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 for one component only. The procedure is identical for all further 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 INSTALL ALL VALVE SPRINGS .
Refer to INSTALL 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) .