I have seen this on a number of heads. The springs put side pressure on the rockers and they eventually wear into the sides of the supports. I face off the damaged areas and use shims to put everything back to center. I made a jig for refacing the arms but you can take them to any automotive machine shop and they can reface them. I believe the surfaces are only case hardened and will not be hard after removing the material needed but who cares unless this tractor is going into full time farming. Go to http://albums.photo.epson.com/j/AlbumList?u=4045430 in the "Maynard" and "Super C" albums and you will find photos of finished heads, look close and you can see the shims.
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Today's Featured Article - Women and Tractors - Tractor Engine Repair - by Teri Burkholder. One of the great things about working on a tractor engine with your other half is that you know what he is thinking of at all times and can anticipate his every move and his next thought of what he will do. With Ben, anyway, I can tell! He'll be busy working and I’m handing him tools and he says, "give me that..." and I’ve already got it in his hand or "hand me that....."and I’ve got the portable light right where he needed it placed to see. "Run in the house and get me a...."as I open th
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