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Wartsila 46 Cylinder Head
Valve seat pocket repairs
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The most common repair required on the Wartsila 46 cylinder head is valve seat replacement, caused by erosion from coolant leaking between the seat and pocket. When the last oversize seat has been fitted and needs replacement, the head is no longer serviceable.
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Cast Iron Welding Services can rebuild the valve seat pockets, machine them to their original dimensions and fit standard size valve seats as used on the head when new.
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Wartsila 46
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The seat pockets are rebuilt with weld.
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Wartsila 46
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Exhaust seat pockets machined and restored back to standard size.
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Wartsila 46
Wartsila 46  
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This picture shows eroded exhaust seat pockets having gone beyond the last standard oversize.		  
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Wartsila 46		  
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The seat pockets prepared prior to welding.		  

Tested, classification approved
and ready for despatch.
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Wartsila 46 Cylinder Head
Cross Bore Cooling Channel Repairs
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Some Wartsila 46 installations the cooling water treatment causes the cross bore cooling channels in the flame plate to corrode, eventually damaging the valve seat pockets. We remove the corroded areas completely, rebuild the cooling channels and machine them back to original dimensions.
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Wartsila 46

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Wartsila 46
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Weld repair stage 1: Repaired cross bore cooling channel.
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Wartsila 46
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Weld repair stage 2: Repaired valve seat pockets.
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Wartsila 46
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Here corrosion has broken through into the valve seat pocket from the cross bore cooling channels.
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Wartsila 46
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Corroded cross bore area removed.

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 Here the flame plate cross bore cooling channels have been restored, all seat pockets standardised and valve seats fitted.
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