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Alberta | The shift overlap is not all that critical, the original controller made some bad shifts. Going from 6 to 7 was quite nasty. Felt like someone hit the back of the tractor with a 5 ton rubber mallet. I installed a foot operated decelerator on the throttle cable and now it shifts better than our new JD9630.
I just had to say that in response to some of the "you'll be sorry" type of comments that follow below, 1) The faulty factory controller we had running the transmission would occasionally engage all the clutches and stalling the tractor but the transmission survived. My replacement controller never failed to work properly. 2) The transmission will unfortunately not shift like a race car (LOL). The clutch fill volumes are larger than a race car and the transmission is built differently. 3) Yes my controller does indeed "just throw full voltage on the solenoid" because that's what the original one did. No (pulse width) modulation. Newer tractors do this, these ones don't. You may want to research as to whether or not the solenoids are designed to take modulation.
The "some junk rotary switches" shown in the pictures sure are robust but supply of them are limited, I made some with lighter rotary switches and added relays to accommodate for the load.
I've added a picture and wiring diagram of a control box that I made to get a tractor mobile. Do whatever you want, make one like this, make one with a rotary switch, make one with an Arduino (check out what tall35 made), try get it fixed, buy the one that doesn't have the price of it mentioned except that it isn't cheap, it's up to you.
Edited by VTG 3/25/2023 15:36
 (controller 2018 1 (full).jpg)
 (trans controller updated more 2 (full).png)
Attachments
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 controller 2018 1 (full).jpg (223KB - 155 downloads)
trans controller updated more 2 (full).png (143KB - 241 downloads)
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For Case 4994 owners, "Twin Disc" transmission controller solutions
