| Removing and installing cylinder head |
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| Renew the cylinder head bolts. |
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| On assembling, replace self-locking nuts, bolts subject to goniometric tightening, as well as o-rings and gaskets. |
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| When installing a reconditioned cylinder head with camshafts fitted, the contact surfaces between bucket tappet and cam surface must be lubricated after fitting the head. |
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| The plastic protectors fitted to protect the open valves must only be removed immediately before fitting the cylinder head. |
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| When fitting a new cylinder head or cylinder head gasket, all the coolant must be drained again. |
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| Cylinder heads which have cracks between the valve seats or between valve seat inserts and the spark plug thread can be used further without reducing service life, provided the cracks do not exceed a maximum of 0.3 mm in width, or when no more than the first 4 turns of the spark plug threads are cracked. |
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