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9N transmission case leak. Never heard of this one.

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Abbby

04-05-2020 12:06:01

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Been doing some major work on tractor which included splitting transmission to differential to remove stuck PTO shaft. Great because I can also fix that pesky leak at that joint. Put it back together and put in a couple gallons of oil in. Wanted to make sure no leaks. Unfortunately looks like it is leaking at the transmission to differential joint again. Dang. Closer investigation revealed to what appears to be a large crack in the transmission housing that is the source for the leak. Likely been there for a long time. Anyone have thoughts on this? My options are 1) weld/braze in place. I do not have equipment for this. 2) JB weld in place. I can do this but challenging on the bottom side. 3) Remove case and take some where for weld/braze. 4) Remove case and JB weld. I vote for option 4. I can do myself with little expense. Seems unlikely tractor will break in half. tractor been in the family for 47 years and never with a loader.

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JMOR

04-06-2020 23:20:25

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Re: 9N transmission case leak. Never heard of this one. in reply to Abbby, 04-05-2020 12:06:01

Quoting Removed, click Modern View to seeHow much per year does it cost you for the amount of oil that is leaking out & how many years do you expect to use it?

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Ultradog MN

04-06-2020 14:29:32

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Re: 9N transmission case leak. Never heard of this one. in reply to Abbby, 04-05-2020 12:06:01

The cast iron in these Fords is a Very good grade and welds or brazes nicely.
I could do either here at home.
But I wouldn't.
I would do as most of the others suggest and drop a different transmission in it.

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John Deere D

04-06-2020 07:23:50

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Re: 9N transmission case leak. Never heard of this one. in reply to Abbby, 04-05-2020 12:06:01

Good morning.....
My experience with the FORD N's is very limited..... (have owned and operated a 2-N for the past two years.....:))
With the above stated I own and operate a Ford 2-N..... ...
If and when the day should arrive that the Transmission housing is becomes damaged I shall install a 4 speed transmission from a parts 8-N that was given to me....

Yes, the tractor shall become a MUTT...but that is fine..... ..

Just a thought.....

Bob..

Bob...

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Bob - MI

04-06-2020 06:24:54

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Re: 9N transmission case leak. Never heard of this one. in reply to Abbby, 04-05-2020 12:06:01

There's a number of choices for a repair that is simply a leak stopper. I would ask the question what do you intend to do with the tractor. If there a lot of pulling involved then there's some level of loading that will cause that crack to propagate.

Ford castings were more likely iron not steel and the location of that crack indicates a flaw in the casting that initiates inside the housing at the fillet radius. This would be from any number of reasons such as a sharp edge on the core that formed the inner walls, metal temperature variation, and on and on. I would guess that the crack is pretty much at the end of the defect span.

If you just want to stop the oil leak then there's the easy route of JB Weld. I would drill crack stopper holes at each end before any repair. Brazing cast iron isn't easy and a big challenge is you need to get the oil out of the crack otherwise it will contaminate the braze joint.

You have an offer for a free case and that's the best you can get. Your tractor and your choice.

Good luck.

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Copperhead don't play

04-06-2020 06:05:59

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Re: 9N transmission case leak. Never heard of this one. in reply to Abbby, 04-05-2020 12:06:01

gears,

that is very thoughtful of you.

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showcrop

04-06-2020 05:05:53

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Re: 9N transmission case leak. Never heard of this one. in reply to Abbby, 04-05-2020 12:06:01

Abby, I see the direction of stress on that crack making JB weld no more than a wish. It is entirely different from a horizontal crack on an engine block. Gears is just one full day's drive away from you. I would consider his offer seriously.

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Abbby

04-05-2020 18:16:43

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Re: 9N transmission case leak. Never heard of this one. in reply to Abbby, 04-05-2020 12:06:01

I am located in western WI about 1 hour east of St. Paul, MN. I would need to find something a little closer but thanks for the offer.

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JWA

04-05-2020 18:07:28

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Re: 9N transmission case leak. Never heard of this one. in reply to Abbby, 04-05-2020 12:06:01

Had a crack that was weeping on my 9N transmission case. Drilled small hole at each end probably 3/32" or so, grooved out with disc grinder,cleaned with laguer thinner applied JB Weld, let it cure under heat lamp sanded,painted and have been using it for at least 15 years with no weeps or leaks. Cheap fix give it a shot. Hint, while the JB Weld is still slightly pliable if you will dob it with the grit side of some 80 grit sand paper you can make it look like the original casting. Good luck.

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Hobo,NC

04-05-2020 17:46:11

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Re: 9N transmission case leak. Never heard of this one. in reply to Abbby, 04-05-2020 12:06:01

You could make a cover plate drill and tap and bolt it on... Another repair is to use stitch pins...
I am sure its cast steel I would weld the ell out of it... Are be caught trying...

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gears

04-05-2020 16:56:47

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Re: 9N transmission case leak. Never heard of this one. in reply to Abbby, 04-05-2020 12:06:01

Abbbby, where are you? I ve got a case you could have. NorthEast OH if you like.

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Bob

04-05-2020 16:49:44

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Re: 9N transmission case leak. Never heard of this one. in reply to Abbby, 04-05-2020 12:06:01

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There's all sorts of places that could preheat and weld or braze your transmission properly, or possibly "stitch" it and make a permanent repair.

But that would require disassembly and more $$$ than a good used case or complete transmission can be had for.

Any attempt to weld or braze it "in place" and have it last would be a case of LUCK, IMHO.

It cracked in a "stress area", and most likely will crack there again unless correctly repaired.

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Den N Ms

04-05-2020 15:48:35

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Re: 9N transmission case leak. Never heard of this one. in reply to Abbby, 04-05-2020 12:06:01

Abbby ,The best fix is a different transmission or a case,not expensive or hard to find one

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Abbby

04-05-2020 15:31:13

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Re: 9N transmission case leak. Never heard of this one. in reply to Abbby, 04-05-2020 12:06:01

So what are your thoughts on welding or brazing? Seems that would be better than JB weld.

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kirk-nj

04-05-2020 12:52:47

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Re: 9N transmission case leak. Never heard of this one. in reply to Abbby, 04-05-2020 12:06:01

Drill a hole at each end of crack. V out crack with cut off wheel on grinder. Sand clean, Smear JB weld let dry a day or two than smear again. Should last a couple years. Look around for a good case in you spare tim

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R Geiger

04-05-2020 12:17:46

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Re: 9N transmission case leak. Never heard of this one. in reply to Abbby, 04-05-2020 12:06:01

I had one like that and i just replaced the transmission.

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Bob

04-05-2020 12:32:58

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Re: 9N transmission case leak. Never heard of this one. in reply to R Geiger, 04-05-2020 12:17:46

Agree, best permanent repair would be to swap out the transmission.

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