Remove
- 1. Remove both cylinder head covers
Important. Collect fuel in a suitable container and block oil channels with rags.
- 2. Remove oil leak line (1), cylinders 1, 3 and 5 • Unscrew 4x banjo bolt • Remove 4x gasket
- 3. Remove 2x bracket, injector, cylinders-1-3-5 (2) • Unscrew 3x nut
Note. Release both nuts of injector bracket evenly.
Important. Pull injectors out of cylinder head carefully! Note copper seal rings.
- 4. Remove 3x injector cylinders-1-3-5 (3)
Important. Collect fuel in a suitable container and block oil channels with rags.
- 5. Remove leaked oil line (1), cylinders 2, 4 and 6 • Unscrew 4x banjo bolt • Remove 4x gasket
- 6. Remove 2 injector brackets (2), cylinders 2, 4 and 6 • Unscrew 3x nut
Note. Release both nuts of injector bracket evenly.
Important. Pull injectors out of cylinder head carefully! Note copper seal rings.
- 7. Remove 3 injectors (3), cylinders 2, 4 and 6
Inspect
- 8. Raise vehicle by its entire height
- 9. Detach engine compartment cover and right-hand engine splash guard if present
- 10. Lower vehicle by its entire height
- 11. Turn crankshaft
Note. Turn crankshaft evenly in the direction of engine rotation. Camshaft pair for cylinder 1 must be at the top.
- 12. Check 4x valve lash, cylinder 1 • With feeler gauge – Test values: Intake valves/exhaust valves 0.40 mm!
Note. Check valve play with the engine cold - room temperature.
- 13. Turn bucket tappet (1) until tappet groove (2) points outwards
Important. The valves may not strike the crown of the piston. Use a suitable cover to seal oil bores and camshaft housing over the entire width. The adjusting discs can slip or stick.
- 14. Using EN-46797 (1), press down intake valve 1 on cylinder 1. • Using EN-46799 (2), lock intake valve 1 on cylinder 1.
Note. Place EN-46799 between outside edge of bucket tappet and shim. Do not block the shim
- 15. Lever out shim with a suitable tool, and remove
- 16. Determining new shim thickness • Thickness of the adjusting disc fitted plus valve play measured minus preset value produces the thickness of the new adjusting disc
- 17. Insert adjusting disc
Note. Coat new adjusting disc with engine oil. Insert in valve lifter with marking pointing downwards.
- 18. Remove EN-46799
Note. Hold down bucket tappet with EN-46797 and remove EN-46799 .
- 19. Turn bucket tappet of intake valve 2 until tappet groove points outwards
Important. The valves may not strike the crown of the piston. Use a suitable cover to seal oil bores and camshaft housing over the entire width. The adjusting discs can slip or stick.
- 20. Using EN-46797 , press down intake valve 2 on cylinder 1. • Using EN-46799 , lock intake valve 2 on cylinder 1.
Note. Place EN-46799 between outside edge of bucket tappet and shim. Do not block the shim
- 21. Determining new shim thickness • Thickness of the adjusting disc fitted plus valve play measured minus preset value produces the thickness of the new adjusting disc
- 22. Insert adjusting disc
Note. Coat new adjusting disc with engine oil. Insert in valve lifter with marking pointing downwards.
- 23. Remove EN-46799
Note. Hold down bucket tappet with EN-46797 and remove EN-46799 .
- 24. Turn crankshaft
Note. Turn crankshaft evenly until the camshaft pair exhaust side cylinder 1 are at the top.
- 25. Turn bucket tappet of exhaust valve 1 until tappet groove points outwards
Important. The valves may not strike the crown of the piston. Use a suitable cover to seal oil bores and camshaft housing over the entire width. The adjusting discs can slip or stick.
- 26. Using EN-46797 , press down exhaust valve 1 on cylinder 1. • Using EN-46799 , lock exhaust valve 1 on cylinder 1.
Note. Place EN-46799 between outside edge of bucket tappet and shim. Do not block the shim
- 27. Determining new shim thickness • Thickness of the adjusting disc fitted plus valve play measured minus preset value produces the thickness of the new adjusting disc
- 28. Insert adjusting disc
Note. Coat new adjusting disc with engine oil. Insert in valve lifter with marking pointing downwards.
- 29. Remove EN-46799
Note. Hold down bucket tappet with EN-46797 and remove EN-46799 .
- 30. Turn bucket tappet of exhaust valve 2 until tappet groove points outwards
Important. The valves may not strike the crown of the piston. Use a suitable cover to seal oil bores and camshaft housing over the entire width. The adjusting discs can slip or stick.
- 31. Using EN-46797 , press down exhaust valve 2 on cylinder 1. • Using EN-46799 , lock exhaust valve 2 on cylinder 1.
Note. Place EN-46799 between outside edge of bucket tappet and shim. Do not block the shim
- 32. Determining new shim thickness • Thickness of the adjusting disc fitted plus valve play measured minus preset value produces the thickness of the new adjusting disc
- 33. Insert adjusting disc
Note. Coat new adjusting disc with engine oil. Insert in valve lifter with marking pointing downwards.
- 34. Remove EN-46799
Note. Hold down bucket tappet with EN-46797 and remove EN-46799 .
- 35. Check valve lash of cylinders 2 to 6, adjust if necessary
- 36. Check 24x valve lash, cylinders 1 to 6
Note. Turn crankshaft evenly in the direction of rotation of the engine.
- 37. Raise vehicle by its entire height
- 38. Attach engine compartment cover and right-hand engine splash guard if removed
- 39. Lower vehicle by its entire height
Install
- 40. Install 3 injectors, cyinders 2, 4 and 6 • Renew 3 copper seal rings
- 41. Install oil leak line, cylinders 2, 4 and 6 • Replace 4x seal ring • Screw in 4x banjo bolt
Important. Ensure that injectors are correctly seated in the brackets.
- 42. Install 2x bracket, injector, cylinders-2-4-6 • Tighten 2x nut (M6) 5 Nm • Tighten nut (M10) 30 Nm
Note. Tighten bracket, injector, evenly.
- 43. Fasten leaked oil line, cylinders-2-4-6 • Tighten 3 banjo bolts on injector 20 Nm • Tighten banjo bolt on camshaft housing 20 Nm
- 44. Install 3 injectors, cylinders 1, 3 and 5 • Renew 3 copper seal rings
- 45. Attach oil leak line, cylinders 1, 3 and 5 • Replace 4x gasket • Screw in 4x banjo bolt
Important. Ensure that injectors are correctly seated in the brackets.
- 46. Install 2 injector brackets, cylinders 1, 3 and 5 • Tighten 2x bolt (M6) 5 Nm • Tighten nut (M10) 30 Nm )
Note. Tighten bracket, injector, evenly.
- 47. Fasten oil leak line, cylinders 1, 3 and 5 • Tighten 3 banjo bolts on injector 20 Nm • Tighten banjo bolt on camshaft housing 20 Nm
- 48. Attach both cylinder head covers