Valve Guide Seal: Service and Repair

11 34 560 - Replacing all valve stem seals (N52)





Special tools required:






Necessary preliminary tasks:
- Remove cylinder head Removal and Replacement.
- Remove intermediate lever Removing and Installing/Replacing Intermediate Levers.
- Remove eccentric shaft Removing and Installing/Replacing Eccentric Shaft.
- Remove inlet camshaft Removing and Installing/Replacing Inlet Camshaft.
- Remove exhaust camshaft Removing and Installing/Replacing Exhaust Camshaft.
- Remove roller cam follower Service and Repair.





Firmly press special tool 11 1 480 onto old valve stem seals (1).
Detach valve stem seal from valve stem by turning and simultaneously pulling special tool 11 1 480.





Installation:
Insert all valves Service and Repair.
Fit the mounting sleeves (plastic sleeves) supplied in the spare part on the valve stem end
Lubricate mounting sleeve.

Press on valve stem seal by hand with special tool 11 6 380 as far as it will go.





Assemble engine.