I believe they just had a sleeve bushing in them, as far as I know. I will see if I have a parts book on them yet. When I rebuilt mine I think I found a light duty pipe to use as a bushing to tighten it up. I wasnt planning on doing all the plowing with it so I figured if I keep it greased it should work ok. I think the furrow wheel gets more pressure and abuse than the land wheel. If they had steel wheels the wheel would catch and carry dirt to the top of the wheel, it would fall off onto the axle and pretty much go right in to the axle and bearing.
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