Valve Guide Seal: Service and Repair

11 34 560 Replacing all valve stem seals (N14)

Special tools required:
^ 11 1 480
^ 11 6 380

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

Firmly press special tool 11 1480 onto old valve stem seals.
Detach valve stem seal from valve stem by turning and simultaneously pulling special tool 11 1480.
Installation:
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 dia. drill bit to a depth of B = approx. 23 mm.
This modification has already been taken into account for reordering.





Installation:
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 116 380 as far as it will go.





Assemble engine.