Valve Spring: Service and Repair

11 34 715 Replace all valve springs (M57T2- SCR)

Special tools required:





Necessary preliminary work:
^ Remove cylinder head.
^ Disassemble cylinder head
^ Place cylinder head on special tool 11 9 001.

Position special tool 11 9 008 with straight surface on combustion chamber side of cylinder head (see illustration).

Note:





Procedure for all 4-, -6- and 8-cylinder diesel engines.





Insert special tool 11 9 006 and lock with special tool 11 9 005 in direction of arrow.





Lock special tool 11 9 005 in direction of arrow.

Rotate cylinder head, using special tool 11 9 000, 180° into installation position.

Align special tool 11 9 009 in direction of valve axis. Select corresponding groove in special tool 11 9 015.





Press down valve spring on upper spring cup with special tool 11 9 009.

Hook in with special tool 11 9 011.





Remove valve keys.

Remove valve spring and spring cup.





Installation sequence:
1. Valve
2. Valve stem seal
3. Valve spring
4. Top spring cup
5. Valve keys

If necessary, replace valve stem seals.

Assemble engine.