| Removing and installing cylinder head |
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| Cylinder heads with cracks between the valve seats may continue to be used without any reduction in the life time, provided the cracks are slight and maximum 0.5 mm wide. |
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| It is not permissible to rework the cylinder heads of diesel engines. |
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| Replace O-rings and gaskets. |
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| Replace cylinder head bolts and screws which have been tightened to a turning angle. |
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| When installing an exchange cylinder head with the camshafts installed, it is necessary to oil the contact surfaces between the roller arms and the cams after installing the head. |
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| Do not remove the plastic bases supplied as a protection for the open valves until just before fitting on the cylinder head. |
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| When replacing the cylinder head, replace all the coolant → Chapter. |
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| If engine damage occurs and it is suspected that the cause of this is oil/fuel mixing (olfactory test of the engine oil), the tandem pump must absolutely be checked for internal tightness → Chapter. |
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