JD A Popping out of Gear

Randy K. Crump · Apr 20, 2017

JD A 1951 model, while disking in 3rd gear it sometimes pops out of gear. What might be the cause?

Kent Petersen · Apr 21, 2017

most of the time when this is happening the tapered brg. on the bottom shaft are wore out. need to replace

Resting Relics 1 · Apr 21, 2017

Or the third gear is so worn as to be slightly rounded and they tend to "walk" out of gear. A somewhat common problem on a well used tractor. Good Luck! John

Randy K. Crump · Apr 21, 2017

Could you provide me additional explanation on what the "tapered brg. on the bottom shaft" is, where it is located and how it can be repaired? Thanks!

Randy K. Crump · Apr 21, 2017

See my additional question regarding your first answer.

forty40 · Apr 21, 2017

(quoted from post at 06:07:53 04/21/17) See my additional question regarding your first answer.

My 51 A had issues and it was not the gears being slightly rounded off on the edge from shifting, that's just a natural consequence of 60 yrs of use. It was the worn out bearings on both the upper and lower shaft. While I had it apart, I also replaced the axle seals. When the bearings are worn, the shafts get out of align, putting side load on the gear, pushing it out of engagement. Its more than an afternoon job.

Kent Petersen · Apr 25, 2017

Randy if you dont know what a tapered brg is i would find a JD collared-er in a your area and have him help you there a lot to learn first lesson there are two tappered roller brgs. common name timiken on that shaft

JD A Popping out of Gear

Randy K. Crump

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Kent Petersen

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Resting Relics 1

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Randy K. Crump

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Randy K. Crump

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forty40

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Kent Petersen

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