Replacing the valve stem seals
Preliminary works
- Refer to INSTALLING THE CYLINDER HEAD ON THE SPECIAL TOOL .
- Refer to CHECKING THE POSITION OF THE INTAKE CAMSHAFT (CYLINDER HEAD REMOVED)
- Refer to REMOVE TORSION SPRINGS .
- Refer to REMOVING ALL GATES .
- Refer to REMOVING ALL INTERMEDIATE LEVERS .
- Refer to REMOVE INTAKE CAMSHAFT .
- Refer to REMOVE THE SERVOMOTOR FOR THE ECCENTRIC SHAFT (CYLINDER HEAD REMOVED) .
- Refer to REMOVE ECCENTRIC SHAFT .
- Refer to REMOVE EXHAUST CAMSHAFT .
- 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, operating failure or leaks.
Contaminant or foreign body.
Contamination can result in malfunctions, operating failure 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.
Installing valve stem seals
NOTE:
RISK OF DAMAGE
Contaminant or foreign body.
Contamination can result in malfunctions, operating failure or leaks.
Contaminant or foreign body.
Contamination can result in malfunctions, operating failure 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).NOTE: TECHNICAL INFORMATION
As an alternative to the special tool 0 490 797 (11 1 960) you can also use the assembly sleeves supplied with the replacement part (see applicable BMW parts catalogue). - Make sure that the special tool 0 490 797 (11 1 960) is used and the assembly sleeves when installing the valve stem seal.
- Guide in and install the special tool 0 490 797 (11 1 960)
and assembly sleeves on valve (1).
- Replace the valve stem seal (1) and assembly sleeves.
Parts: Valve stem seal, assembly sleeves
- Feed in and install the valve stem seal (1) on the special tool 0 490 797 (11 1 960)
and assembly sleeves.
- Feed out and remove the special tool 0 490 797 (11 1 960)
and the assembly sleeves.
- Prepare special tool 0 493 249 (11 6 380).
- Press the valve stem seal (1) onto the cylinder head till the limit position using special tool 0 493 249 (11 6 380).
- Make sure that valve stem seal (1) is positioned correctly on cylinder head (2).
Follow-up Work
- Refer to INSTALL ALL VALVE SPRINGS .
- Refer to INSTALL ALL ROLLER CAM FOLLOWERS .
- Refer to INSTALL EXHAUST CAMSHAFT .
- Refer to INSTALL ECCENTRIC SHAFT .
- Refer to INSTALL THE SERVOMOTOR FOR THE ECCENTRIC SHAFT (CYLINDER HEAD REMOVED) .
- Refer to INSTALL INTAKE CAMSHAFT .
- Refer to CHECKING INSTALLATION POSITION OF ROLLER CAM FOLLOWERS
- Refer to CHECKING THE INTERMEDIATE LEVER CLASSIFICATION .
- Refer to INSTALLING ALL INTERMEDIATE LEVERS .
- Refer to INSTALLING ALL GATES .
- Refer to CHECKING THE POSITION OF THE INTAKE CAMSHAFT (CYLINDER HEAD REMOVED)
- Refer to INSTALLING TORSION SPRINGS .
- Refer to DISASSEMBLING THE CYLINDER HEAD FROM THE SPECIAL TOOL .