To put it bluntly, they still tore up final drives, just not as readily. IH put in the original upgrade of bull gears, bull pinion, differential, diff bearings, bull pinion ball bearings etc at a no cost to customer basis however, the bower flat roller bearing on pinion shaft, inside axle and bull pinion and better out side axle bearing was a customer option offered at a very reasonable price at a later date. I put in ten update pkgs in 4 and 560's and many of the bearing packages later on. I also put a 560 up date of bull gears etc in a 450. That was in the days when these tractors did the work, now days they don't give problems around here. My advice , let it slip a little, tires are still cheaper than gears, look at them as your slip clutch.
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Today's Featured Article - What Oil Should I Use? - by Francis Robinson. I keep seein this question pop up over and over again in discussion groups all over the web. As with many things there are often several right answers and a few wrong ones. Some purist I'm sure will disagree to no end with what I will tell you but most of us out here in the real world don't really care do we ? Some of them only bring their noses down out of the air long enough to look down them anyway. If you are like me you are only doing this old tractor stuff because you enjoy it. You
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