Simplicity garden tractor transmission

Royse · Nov 22, 2020

I'm working on the transmission/transaxle out of a Simplicity
Broadmoor 727. Not sure on the year but I'd guess 1960s.
I have it freed up and turning, with Reverse, second and third
all working if I leave first gear out but when I put first gear back in,
top center in the picture, it doesn't clear the drive gear in any gear
shift position so it is locked in two gears all the time.
I'm sure first is installed the same way I took it out, but I'm not
sure that was right to begin with.
Anyone familiar enough with these to tell me what I have wrong?
Anywhere to get a manual or parts breakdown? I didn't find
anything this old on their website.

Rkh · Nov 22, 2020

I have 2 landlord 2110 & I use this website for all simplicity issues-a great
website.

https://simpletractors.com/forums/forum/8-talking-tractors/

Royse · Nov 22, 2020

Thanks Rkh, I posted there as well.

Janicholson · Nov 22, 2020

Assuming that the shaft with the woodruff key on the right is input, and that it turns clockwise when operating, the output shaft also turns clockwise
(welded on gear). In that case, the power in any forward gear has to reverse rotation to the lower middle shaft, then turn the output bull gear CW
again. Reverse is the top right hand shaft with one gear on it that engages with the gear you have called first gear. Could the gear and shaft, you
call first, (center top) be in backwards? the teeth on this side look to have been polished from raking a smaller gear into it. I see no gear that
would do that sliding on this side.
The lower shift "fork" on the input shaft seems to be off of its contact with that gear. Its guide hole seems not to match the the location of the fork
above it. Jim

Royse · Nov 22, 2020

Thanks Jim, that put me on the right track.
I didn't think it was possible to put that shaft in the other way,
but if you stack them into the case in the right order, you can.
I've got it back together and all gears working now.

I went back and triple checked the pictures I took when I
disassembled it and the way I had it was the way it was, so
apparently it hasn't worked since it was last re-assembled.

The shift forks (and their gears) are definitely different.
The lower one, as you noticed, looks a little odd.
That's because the gear on that shaft is a double gear. The fork
actually straddles the lower gear and is machined to fit under the
upper gear that you can see here. There are also other gears
under the visible ones that you can't see in this picture.

It's come quite a ways in the last couple days.
The shifting forks were even froze up in it.

Janicholson · Nov 22, 2020

Glad I was of a bit of help. The professor I had in Auto School would be proud of my effort to "SEE" behind the parts. Rest his soul. Jim

Royse · Nov 22, 2020

More than just "a bit of help" Jim. Thank you and your mentors!

Simplicity garden tractor transmission

Royse

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Rkh

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Royse

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Janicholson

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Royse

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Janicholson

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Royse

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