I've been thinking about it, and Ed's comment about wrong steering parts got me thinking. The main difference between a left and right spindle is the positioning of the slot for the woodruff key that aligns it properly with the spindle arm, so having two right spindles or two left spindles would set the spindle arm off on one side or the other such that they weren't positioned identically when the steering was adjusted properly for the correct amount of toe-in for straight ahead steering, and so they wouldn't rotate the spindle the same amount for the same linear movement of the tie rods on each side as you turn the steering wheel.
Set the steering for straight ahead and look at the arm on the top of each spindle. Are they lined up in about the same position? They should both be pointing almost straight sideways in toward the nose of the tractor, but angled just slightly rearward . If one is actually a little forward of straight sideways instead of a little rearwards, then that side most likely has the wrong spindle in it, and yes, the stress of the wrong steering geometry, especially with the power assist, could have been what wore the bearing out.
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Today's Featured Article - Madison's County - by Anthony West. Philip Madison has been a good friend of mine for quite some time. He has patiently suffered my incessant chit chat on the subject of tractors for longer than I care to remember, and on many occasions he has put himself out, dropped what ever it was he was doing, to come and lend a hand cranking handles, or loading a find onto a trailer. Although he himself has never actually owned or restored a tractor, he was always enthusiastic and always around helping with other peoples projects.
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