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| Renew the cylinder head bolts. |
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| Renew self-locking nuts and bolts when performing assembly work. |
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| Renew bolts which are tightened to a specified angle as well as oil seals and gaskets. |
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| If repairing, carefully remove any remaining gasket material from the cylinder head and cylinder block. Ensure that no long scores or scratches are made on the surfaces. |
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| Carefully remove any remaining emery and abrasive material. |
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| No oil or coolant must be allowed to remain in the blind holes for the cylinder head bolts in the cylinder block. |
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| Do not remove new cylinder head gasket from packaging until it is ready to be fitted. |
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| Handle gasket very carefully. Damage to the silicone coating or the indented area will lead to leaks. |
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| Position cylinder head gasket on dowel sleeves. The word “oben” (top) or the Part No. should face towards the cylinder head. |
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| Cylinder heads which have cracks between the valve seats or between a valve seat insert and the spark plug thread can be re-installed without reducing service life, provided the cracks are only slight and do not exceed a maximum of 0.3 mm in width, and no more than the first 4 turns of the spark plug threads are cracked. |
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| When renewing a cylinder head, a sealing cap must be driven into the front of the cylinder head → Fig.. |
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| When installing an exchange cylinder head with the camshafts fitted, the contact surfaces between bucket tappet and cam running surface must be oiled after installation of the cylinder head. |
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| The plastic protectors fitted to protect the open valves should not be removed until the cylinder head is ready to be fitted. |
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| Secure all hose connections with the correct type of hose clips (same as original equipment) → Parts catalogue. |
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| If engine oil is contaminated, perform oil change. |
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| When fitting a new cylinder head or cylinder head gasket, drain off all the old coolant and refill with new coolant. |
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