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My tractor is an industrial MH-50 loader tractor, 1959.
I'm in frame overhauling journals and installing new bearings. My gap is about .005. The book I think states max tolerance is .003.
My engine started to cease up when the oil pump went out, I think was the cause. It spun 1 cylinder rod crank bearing and it laid some soft bearing metal on the journal. Other journals look good. and the mains look good. I sanded by hand the journals and its took hours with 600 grit emery cloth on #1 but it turned out pretty good for a low tech method. I don't think I'm out of round more than 1-2 thousandths. I turned the crank often systamatically while sanding to keep it round.
Is the tolarance of bearable? I really need to use my loader and then this summer may do a better rehaul. The problem is machinists and mechanics in my area are out months and some even close to a year. We are the heart of farm country here. so its up to me.
I'm in frame overhauling journals and installing new bearings. My gap is about .005. The book I think states max tolerance is .003.
My engine started to cease up when the oil pump went out, I think was the cause. It spun 1 cylinder rod crank bearing and it laid some soft bearing metal on the journal. Other journals look good. and the mains look good. I sanded by hand the journals and its took hours with 600 grit emery cloth on #1 but it turned out pretty good for a low tech method. I don't think I'm out of round more than 1-2 thousandths. I turned the crank often systamatically while sanding to keep it round.
Is the tolarance of bearable? I really need to use my loader and then this summer may do a better rehaul. The problem is machinists and mechanics in my area are out months and some even close to a year. We are the heart of farm country here. so its up to me.