M transmission- update

txdutchman · Dec 10, 2016

Finally got the transmission input shaft out. Pilot bearing plumb gone, nothing left but the races.

Not sure if this gear needs replaced or not.
What say the experts?

(img)http://photos.imageevent.com/texasdutchman/farmalls/farmall1/websize/IMG_3857.JPG(img)

Janicholson · Dec 10, 2016

It will jump out of 5th. The ramp like wear is substantial and not really fixable. The input shaft coupling splines are also suspect and likely to be worn as well. The shifter normally moves 3/4 of an inch at the knob going into the gear engagement (teeth on splines touching) to full engagement. That set will move only about 3/8 or so on the knob, making it not very "in gear" and worn at the contact point of each splines. Jim

RBoots · Dec 10, 2016

Jim is right, not much meat left there. Not much to begin with, but grinding into 5th does that over the years. If it was mine, it'd be done now, unless you feel like doing it later.

CenTex Farmall · Dec 10, 2016

For sure it's been ground into fifth a few times, however the back of the worn part still appears to be flush with the top of the gear. I think it's OK to re-use. With a new pilot bearing and new input shaft bearings and decent ball functioning properly it should stay in gear.

How do the teeth on fourth look? Will you even need road gear that much? How does the other half look?

The tricky part about buying a used one through the mail is that unless you get to see close up photos of the exact part there's a 50/50 chance the "new" one won't be any better than what you already have. What constitutes a good used part can be rather subjective.

If 5th is seldom used and the teeth on 4th are OK then I would use it.

txdutchman · Dec 11, 2016

Here a picture of the other gear.

txdutchman · Dec 11, 2016

Another one. Sorry I don't have a better picture.

txdutchman · Dec 11, 2016

Tearing into it later is no problem for me. I love wrenching on these old tractors. Major stress reliever. It's a hobby for my son and me. Tractor won't be used for actual work. It will be a parade tractor if and when we ever decide to repaint. But if it happens to have to work I want it to be able to. lol

Janicholson · Dec 11, 2016

I like the input shaft better than the slider. Were it mine, I would replace the slider and pilot bearing and give it a go. Bates equipment in Burbon Indiana probably has the gear. Jim

txdutchman · Dec 11, 2016

Thanks. Will update when we get it going again. Might be awhile though.

M transmission- update

txdutchman

Member

Janicholson

Well-known Member

RBoots

Well-known Member

CenTex Farmall

Well-known Member

txdutchman

Member

txdutchman

Member

txdutchman

Member

Janicholson

Well-known Member

txdutchman

Member

Similar threads