Valve Spring: Service and Repair

Valve Spring Removal and Installation

(cylinder head removed)
Preliminary work is described in section on dismantling and assembling the cylinder head.
Removing camshaft.





Remove bucket tappet with special tool 11 3 250.
Installation:
Worn bucket tappets may only be reused in the same tappet bore.

Standard coding table:

Arrange bucket tappets by cylinder and place on special tool 11 3 030 in correct order.





Fit special tool 11 0 211 from below in special tool 11 1 065 and secure with special tool 11 1 045.





Align special tool 11 0 345 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