IH took basically a 20-year old design of an M rear end that wasn't exactly overdesigned for a 3-14 plow tractor, changed a few things, and decided it would be all right to use with the new 560.
460 was the same idea as a H rear end. Same story, double the hp and load on the rear end all day long and you're asking for trouble.
560 diesels especially were often turned up. Some got a M&W turbo added for a few more horsepower. Some people even pulled 6 bottoms with these tractors. It was a disaster waiting to happen when IH knew issues existed when the 400-450 tractors were in the field.
Some people say pulling the gear lube out of the rear ends played a part in all of this, too.
IH tried to make a few small alterations. Some helped, some didn't. Eventually they changed a boatload of parts to make these work. Most have been updated, some haven't.
460's without the larger diameter axles didn't have heavy enough axles when using a mounted picker. The smaller axles couldn't take the stress and many times snapped in two.
How a 560 with a fast hitch ever pulled a 5 or 6-bottom plow without ripping the hitch apart, I'll never know.
The sad thing is that right after these nightmare tractors came the 806, one of the best tractors they ever made. By then, many had turned to other colors of paint on their machinery to power their farms and some never came back.
AG
This post was edited by AG in IN at 09:25:35 12/21/11 3 times.
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