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mtny and Charlie175

2

2510Paul

Well-known Member
I thought I posted this but now cannot find it. I must have not hit submit.

I found your responses to my post about the 100 series and 200. I very much appreciated the picture, and comments.

It would be great if there were more pictures/diagrams as to what happens to these transmissions to make them jump out of gear and what the fix is.

Thanks.

Paul
 
My experience is on the smaller AC's but seems to apply to the 190. My 190 snicks right into gear and stays, for which I am glad!

The design of the gears is such that repeated "grinding" forcing it into gear before the transmission stops, wears the dog teeth down and when done enough, it doesn't hold when the gear force changes.
Second to this is the wear of the shifter and shift rails. If you take the shifter out, you will notice the end can wear and not push the gears into place. The shift rails can also wear causing the same issue. I have seen some people weld these for a easy fix

If the gear dogs are worn, it is a time consuming process as you have to take the entire back end apart.

These are from my D12, so use them with that understanding

The slot is where the shifter goes into move the rail


TEh rail engages the collar to slide the gear over
[img]https://vgy.me/7eypeU.jpghttps://vgy.me/LgZi0o.jpg[/img]
 
Thanks Charlie for the pictures. At some point I hope to tear at least one of my JD 2620 transmissions apart. It makes a lot of noise. It will be an interesting learning experience. Paul
 
I don't post very often , his description is as exact as can be . I bought mine with first gear out of it . Claimed to be rebuilt and it was but whoever did it they didn't change the bottom shaft and first gear is milled on it . So there were new process gears with wrong counter shaft . With help from Sandy lake implements and folks like Dr allis I did a complete teardown , replaced shaft and put new end bearings in for good measure . I've also had help with an Oliver 770 and my Ford 5000 and 4000 . Can't say enough good about this forum and the gurus here.
 
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