Overview - Cylinder Head

Fig 1: Cylinder Head Exploded View

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1. Alignment Pin
2. Cylinder Head Gasket
   • Always replace after removing.
   • Installed position: the part number faces the cylinder head
3. Cylinder Head
   • Checking for distortion. .
   • Only replace together with the cylinder head cover
   • Removing and installing. Refer to CYLINDER HEAD, REMOVING AND INSTALLING .
4. Bolt
   • Tightening. Refer to Fig 2.
   • Always replace after removing.
   • Loosening. Refer to appropriate service information. .
5. Bolt
   • 9 Nm
6. Heat Shield
7. Bolt
   • 9 Nm
8. Bolt
   • 9 Nm
9. Connection
   • For coolant hose
10. O-ring
    • Always replace after removing.
    • Coat with coolant
11. Cylinder Head Bolt
    • Tightening. Refer to Fig 2.
    • Always replace after removing.
    • Loosening. Refer to appropriate service information. .
12. O-ring
    • Always replace after removing.
    • Coat with coolant
13. Connection
    • For coolant hose
14. Bolt
    • 9 Nm
15. Engine Lifting Eye
16. Bolt
    • 10 Nm + 90°
    • Always replace after removing.
17. Partition Plate
18. Engine Lifting Eye
19. Bolt
    • 10 Nm + 90°
    • Always replace after removing.
20. Alignment Pin

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-- Remove the bolts -arrows-.

-- Loosen the cylinder head bolts in the sequence -1 to 10-.

Fig 2: Cylinder Head Loosening Sequence

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• Replace the bolts that were tightened with an additional turn after removing them.

• Bolt differences: 

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• Bolt without collar
• Bolt with collar -arrow-

-- Tighten the bolts in the Steps below and as shown in the sequence:

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-- Check the cylinder head at several locations for distortion using a :VAS6075  and a feeler gauge.

• Maximum permissible distortion: 0.05 mm