Valve Gear, Servicing

Valve gear, servicing
Valve gear, assembly overview

Note: Cylinder heads with cracks between the valve seats may be used without reducing engine life, provided the cracks are short and not more than 0.5 mm wide.

1. 20 Nm + 1/4 turn (90°) further
2. Rocker arm shaft
^ Do not interchange
3. Cylinder head bolt
4. Washer
5. Hydraulic lifter
6. Keepers
7. Valve spring plate
8. Outer valve spring
9. Inner valve spring
10. Valve stem seal
11. Valve guide
12. Unit injector
13. Cylinder head
14. Seal
15. Valves
16. Bearing shell
17. Camshaft
18. Bearing cap
19. 8 Nm + 1/4 turn (90°) further