Cracked transmission housing

Donjaytaylor

New User
Have a 59 TO35 gas engine that sat in a field for 20 years. Got it running and driving but there is a crack on the bottom of the transmission housing leaking fluid, can this be welded ?
 
I think you should review what SV did
with his yellow Dodge with the Cummins
engine. Might not be able to be use the
technique on your tractor, as the housing
might have stress on it.
 

You don't tell where you are but the most common reason for tractor transmissions to crack is from water in them freezing. When they crack they also expand on the bottom and sides which will probably put the shafts just enough out of line to have problems. In addition the water will have ruined lower bearings.
 
In North Texas and thats what we thought on the possibility of other damage. Now have to decide if its worth investing the money to fix it or sell it off.
 
I have a 59 TO35 also. I bet there are a bunch of salvage rear housings out there. It seems like any
tractor I ever saw parted out had that portion left over. I’d say just replace that portion. Assuming the
balance of the tractor is in good condition. Mine has a very good running engine. Sheet metal not so
good.
cvphoto52932.jpg
 
Before I replaced it, I would give it my best shot at epoxying it.

Drain it, tip it so no oil will be trying to find it's way out, vee out the crack, be sure to find the ends, clean it thoroughly.

Over in Tool Talk, Randy was telling us about Belzona epoxy. Sounds like some really good stuff!

Nothing to loose but the cost of the epoxy...

If nothing else, slow it to a manageable drip. It holds 8 gallons, so it would take a while to loose a noticeable amount.
 
One more thing, those are notorious for getting water in the cases (bad shifter and draft spring boots), but not known for freeze cracking.

Are you sure it is a crack? It's not loose bolt under the draw bar? There are a couple bolts that have a nut on the inside that are known for getting loose and there is no easy way to tighten them.
 
35 is a very easy tractor to work on, easy to get into the transmission to look for damage to parts from water. As another poster said, should be easy to find another housing. No more than a days work to pull transmission, take parts out from yours plus whatever you need to rebuild. You will need lifting gear to remove top cover and a proper MF shop manual.
 
Yes it could be welded. You would have to drain the oil and clean the oil out of the crack. I use lacquer thinner and compressed air. I had a pinion gear break and come through the cast on the rear end of my jeep. I cleaned it up and hammered the broken piece back
in and welded it with a nickle rod and it's lasted for many years. Of course with any cast it's pot luck with an electric weld. Sometimes the metal has so much impurities in it the metal tends to burn up. Brazing would be a lot safer.
 

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