Valve Guide Seal: Service and Repair

11 34 560 Replacing all valve stem seals (N54, N54T)

Special tools required:





Necessary preliminary tasks:
^ Remove cylinder head.
^ Remove intake camshaft.
^ Remove exhaust camshaft.
^ Remove roller cam follower.
^ Remove all valve springs.

Firmly press special tool 11 1 480 onto old valve stem seals.

Detach valve stem seal from valve stem by turning and simultaneously pulling special tool 11 1 480.





Installation note:
Insert all valves.





Note:
For use on the N54 engine, special tool 11 6 380 must be remachined according to the sketch with a 10 mm drill bit dia. to a depth of B = approx. 23 mm.

This modification has already been taken into account for reordering.





Important!
Different diameters at valve stem.
All valve stem seals are colour-coded.

Valve dia. 5 mm: valve stem seal is red or brown.

Valve dia. 6 mm: valve stem seal is green or light green.

Installation note:
Fit the mounting sleeves (plastic sleeves) supplied in the spare part on the valve stem end





Lubricate mounting sleeve.

Press on valve stem seal with special tool 11 6 380 by hand up to stop.

Note:
Graphic shows N46.





Assemble engine.