7. Replacing core plugs

First punch a hole into the plug in the centre where it will be weakest from corrosion
Use an old screwdriver or thin chisel to lever it out
Here you can see the corrosion to the plug and round the casting
Use a wire cup brush in an electric drill to thoroughly clean out the casting
Put a little Locktite or similar sealant round the edge of the hole like this
Drop in the core plug
and hit it firmly in the centre until a good dimple is formed - make sure the plug stays at the bottom of the hole during the process
Should look like this when you have finished - do the other three the same way.


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