Valve Spring: Service and Repair

(cylinder head removed)
Preliminary work is described in section on dismantling and assembling the cylinder head, refer to Cylinder Head, Service and Repair.
Removing camshaft, refer to Camshaft, Lifters and Pushrods, Camshaft, Engine, Service and Repair





Secure bucket tappets with special tool 11 3 250. Lift out bearing strip with bucket tappet.

Installation: Worn bucket tappets may only be reused in the same tappet bore.

Standard coding table:

Fit bucket tappets arranged by cylinder and in correct sequence on special tool 11 3 030.





Install special tool 11 1 441 from below in special tool 11 1 065 and locate with special tool 11 1 045.





Align special tool 11 0 344 in direction of valve shaft and select appropriate groove in special tool 11 0 342.





Press down valve spring on spring cap, top, and remove valve keys. Remove valve spring and plate spring.





Installation sequence:
1. Valve
2. Valve-stem seal
3. Lower plate spring
4. Valve spring
5. Upper plate spring
6. Valve tapers