560

I am from the Oliver forum. We frequently discuss the White takeover and the end. Was just seeing mention on the big tractor forum of the 560 model and the problems incurred. Ignorant of that - can someone give me a quick paragraph of history?

The 560 had basically a M rear end, and it was pushed to the limit's with the 450 tractor engine that had about 56 horsepower, so when they got the bright idea to build the 560 with with 62+ horsepower, it simply didn't stand up. John Deere was breathing down their neck with the 4010, and when a man or company get desperate they do stupid things! the metal in the bull gears started galling, and the bearing started failing,at about 950 hours, IHC had to do a major recall and almost broke the company. The board of directors voted about51% to 49% to stop building tractors that how close they come to biting the bullet, in the early 60's.

Thank you

I have a 560D and I like it. Their were quite a few 560s bought around me at the time, but no one that I know of had any trouble with the rear ends. The IH dealer installed the rebuild kit right along with the rest of IH. The one I have has the triangle plus a number 1 stamped in the serial number tag. I know that their were failures, but I have always felt that one of the main reasons was the change from 90w gear oil in the 450 to 10w hydraulic oil in the 560 rear ends was one of the main reason. I was taught that gear oil besides being a lubricant also cushions the area between the gear teeth and bearings. I talked to the mechanic that had changed them at the time after I had bought mine, and he said that the dealership got in a 750 pound wood box for each tractor they had sold to be installed. He later told me that since I had the triangle plus the number 1, mine would have had the complete upgrade. This is all I know, other people have other knowledge and experiences then me. In my own little world this is what I know and believe.

I am no expert on oil or gear lube, but think i was told that Hy Tran, has got a better extreme pressure value than the thicker 80-90, etc !!

No argument here, just wondering why 450s didn't have all that much trouble with their rear ends. I have heard of some but not many. And a lot of 450 fans say they can pull 560s backwards all over the place anytime you want to hook them up. So what gives?

(quoted from post at 05:16:49 03/17/18) And a lot of 450 fans say they can pull 560s backwards all over the place anytime you want to hook them up. So what gives?

Click to expand...

That's something I have a hard time believing.

I am also a suspect of the oil weight change being a culprit.

I think the change to tapered roller bearings was the fix. Though I have never been inside one to verify.

Not the 560 Diesel, they had more power than the 560 C's did. Some of the diesel's had up to 72 HP

Oh that bearging change was the answer, just think of a Roller has more surface than a ball bearing, but that Hy-tran is one heck of a lubricant !

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The real story is that John McCaffery the president of IH at the time was spending all of the company money on construction equipment. The development of the TD 24 and later TD 25 along with the acquisition of the Frank G. Hough company of Libertyville, IL to get the Payloader, Payscraper and Payhaulers used up all of the financial resources of the company in the 1950's. Normally, a company when doing an engine change with more power undertakes an endurance test development program where the tractor,for example,is tested on 4 square machines in the lab and on heavy tillage equipment in the field test portion in difficult soils. There was no money for the testing on the 460,560,and 660 tractors and the VP of engineering let himself be coerced into signing off that the tractors were ready for production without doing the endurance testing. As soon as the final drives started failing John McCaffery retired and the VP of Engineering was fired. This information was gleaned from many reference books on IH I have read. It was then left to those who succeeded McCaffery and the VP of Engineering to fix the problem. The fix was 25 degree pitch angle bull pinions and bull gears, tapered roller bearings on the bull pinions, heavy duty roller bearings on the axle inner bearings and heavy duty ball bearings on the outer wheel bearings along with new brake backing plates to accommodate the tapered roller bearings on the bull pinions. The cost of the retrofit programs back in 1959-1960 was $19 million dollars that was all borrowed. That would be probably about $300 million in today's dollars. It was certainly a kick in the butt for IH and the new president Harry Bercher in order to make the replacement tractors strong told the designers to "make them stout". The replacement was the 706 and 806 and that is one of the reasons why the 806 weighed more than 1000 lbs heavier than a JD 4020. That made it difficult for IH to compete with the 806 against the 4020 on price. However the 806 was about 5 -10 HP more than a 4020 but that often got lost once price entered the equation during sales pitches to customers. However it allowed them to do horsepower growth on the tractor without extensive reengineering. This continued on up to the 1466 which peaked out at 145 PTO HP and still retained the same castings as the 806.

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The final drive failures issue was initially discovered during endurance testing of the Super M under severe overload conditions. This continued on through the Farmall 400 and just the odd failure occurred. With the Farmall 450 a few more failures were occurring, but not enough to justify a complete redesign of the final drives. Since the PV factor (torque x RPM) was still close to the value used in the design of the Super M, they were able to get by without a complete redesign of the final drives. But when the Farmall 560 came along with an increase in both torque and RPM, the straw that broke the camels back occurred and a high final drive failure rate occurred during heavy drawbar loading. This was sufficient to trigger the recall campaign.

Interesting,part of the history! One thing leads to another!