Valve Spring: Service and Repair

Removal and Installation

(cylinder head removed)

Preliminary tasks are described in disassembly and assembly of cylinder head.

Remove bucket tappet with special tool 11 3 250.

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

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. Select corresponding 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.

Arrangement:
1. Valve
2. Valve-stem seal
3. Lower plate spring
4. Valve spring
5. Top plate spring
6. Valve tapers