Broken hydraulic Cylinder Case

[5030]

I'm an engineer as well. A Farming engineer...

 

[TractorTech]

Considering the original case break and stud repair, I would beef up the toplink mount by making a bracket that ties into the 4flats on either side of the PTO, drill, tap and bolt it there. The aluminum housing isn’t strong enough. I know you said you replaced the 3PT post hole digger in favor of a skid steer type, but thats just my 2 cents

 

[LD1]

Considering the original case break and stud repair, I would beef up the toplink mount by making a bracket that ties into the 4flats on either side of the PTO, drill, tap and bolt it there. The aluminum housing isn’t strong enough. I know you said you replaced the 3PT post hole digger in favor of a skid steer type, but thats just my 2 cents

Im not sure drilling and tapping those spots would provide much more strength.

And whats aluminum? I though this was cast iron??

At one time, kubota actually offered a bracket to beef up the toplink connections on some of their older models. It was recommended for 3PH backhoes. And it tied the toplink brackets (which only have horizontal bolts bolting it to the rear case) to the bolt holes on top where the seat mounts.

IF you can make/weld something that ties in some of the bolts on top of the casting it will help alot.

This was kubotas optional toplink mounting bracket

 

[Taktiks]

I would investigate to see what the loud clanking sound was.
If possible to pull the pan with the engine still in the tractor I would to look at the bottom and if it has them
the balancers. A loud clank could be a lose flex plate or hydro static drive.
Other wise your engine into the new unit, repair that engine and put it in your old unit with the new cover and now you have two good tractors.

Like your thought sequence. I too thought of pulling the pan and looking for gremlins. Also thought about injector pump..BTW, as an engineer I do a fair amount of customer work because thhere seems to be a shortage of competent techs- but I am hamstrung (mixed metaphor?) with one

 

[Taktiks]

Considering the original case break and stud repair, I would beef up the toplink mount by making a bracket that ties into the 4flats on either side of the PTO, drill, tap and bolt it there. The aluminum housing isn’t strong enough. I know you said you replaced the 3PT post hole digger in favor of a skid steer type, but thats just my 2 cents

I too thought about a mechanical abutment of sorts, but haven't gotten there yet. Just want to avoid another failure. The worse case scenario, of course would have the welds fail and re-damage the case and/or hydraulic cover.
Can I ask you, in the event some foreign materials entered the case during repair, would you suggest a flush of sorts, perhaps kerosene?

 

[Taktiks]

Im not sure drilling and tapping those spots would provide much more strength.

And whats aluminum? I though this was cast iron??

At one time, kubota actually offered a bracket to beef up the toplink connections on some of their older models. It was recommended for 3PH backhoes. And it tied the toplink brackets (which only have horizontal bolts bolting it to the rear case) to the bolt holes on top where the seat mounts.

IF you can make/weld something that ties in some of the bolts on top of the casting it will help alot.

This was kubotas optional toplink mounting bracket

View attachment 772667

Xlent content my friend. Did I miss-say aluminum somewhere? No, the tricky cast iron here. I will take a photo of my "attempt." So many shops wouldn't touch it because 'it is likely to fail, ' well, we'll see-hopefully not.
Just got a good deal: Met an airport owner who provides quasi-heated storage, and he allows access for repairs . So I have a Polaris in there so I thought I'd put T1 on my trailer and put it in. No excuses for not getting it done. But even with essentially one hand I continue work on a very large deck (???)

I asked the cast maker (surgery #8 on left hand, last week)

to surprise me on my surgically repaired hand and she chose the pink. Tough.

 

[Taktiks]

Xlent content my friend. Did I miss-say aluminum somewhere? No, the tricky cast iron here. I will take a photo of my "attempt." So many shops wouldn't touch it because 'it is likely to fail, ' well, we'll see-hopefully not.
Just got a good deal: Met an airport owner who provides quasi-heated storage, and he allows access for repairs . So I have a Polaris in there so I thought I'd put T1 on my trailer and put it in. No excuses for not getting it done. But even with essentially one hand I continue work on a very large deck (???)

I asked the cast maker (surgery #8 on left hand, last week)View attachment 772835 to surprise me on my surgically repaired hand and she chose the pink. Tough.

Just rebuilt a Little Beaver EZ Kwik trencher. Runs better than most of my gas-powered machines (many).

 

[ROUSTABOUT]

Looks like it's time to move to town and get an apartment.

 

[LD1]

Xlent content my friend. Did I miss-say aluminum somewhere? No, the tricky cast iron here.

Tractortech mentioned aluminum in post #22. That comment was directed at him cause I wasnt sure where he was coming from with that statement.

 

[Taktiks]

Looks like it's time to move to town and get an apartment.

Ha ha, I am a perpetual transient. Problem with that is when I need a toll 'here' it is 'there. ' Frustrating.

 

[ROUSTABOUT]

Ha ha, I am a perpetual transient. Problem with that is when I need a toll 'here' it is 'there. ' Frustrating.

It never goes the right way sometimes.

 

[TractorTech]

Xlent content my friend. Did I miss-say aluminum somewhere? No, the tricky cast iron here. I will take a photo of my "attempt." So many shops wouldn't touch it because 'it is likely to fail, ' well, we'll see-hopefully not.
Just got a good deal: Met an airport owner who provides quasi-heated storage, and he allows access for repairs . So I have a Polaris in there so I thought I'd put T1 on my trailer and put it in. No excuses for not getting it done. But even with essentially one hand I continue work on a very large deck (???)

I asked the cast maker (surgery #8 on left hand, last week)View attachment 772835 to surprise me on my surgically repaired hand and she chose the pink. Tough.

Apologies on the aluminum as that is what it looked like in the pic.

 

[TractorTech]

I too thought about a mechanical abutment of sorts, but haven't gotten there yet. Just want to avoid another failure. The worse case scenario, of course would have the welds fail and re-damage the case and/or hydraulic cover.
Can I ask you, in the event some foreign materials entered the case during repair, would you suggest a flush of sorts, perhaps kerosene?

Kerosene or diesel flush would be a good idea.

 

[mikester]

If you are planning to sell your machine fast on CL get the case welded and use gobs of thick paint to hide your sins and seal any short term leaks.

Your casing is FUBAR.

 

[jwmorris]

I would go the silicon bronze filler/TIG method on the cast iron too. Probably add some steel straps too. To use some non broken areas for support.

You could even go all the way down to that steel bracket bolted below the PTO shaft.

 

[Taktiks]

I doubt this was caused by simply lifting the three point. The first post indicates an auger (possibly stuck?) in the ground and attempts to free or redirect it. We don't have the full story here but the tractor was probably moving in one direction or another in that attempt so the forces applied to the lift arms weren't strictly from the hydraulics.

You are correct sir. Auger was locked in tight in clay. Dummy me, rocked tractor a bit and the housing broke apart. My heart sank. I can weld but not cast iron so I brought it to a pro. FINALLY putting it back together. Hope it holds. Should I flush trans case?

 

[Rustyiron]

I would (flush the case)

 

[5030]

That picture looks almost like the case on a buddy's Kubota Grand L that he mounted a 3 point mount backhoe on. Kubota warranted it the first time, he did it a second time and ate the total cost. If I remember, the total was (parts and labor and lubricant) was around 6500 bucks. Needless to say, the BH was sold and later the tractor as well.

Good reason to never buy a 3PH mounted hoe with no subframe.

 

[5030]

Welding cast iron isn't difficult really. You can either O/A weld it or TIG it, but either method requires careful pre heating and extended cooling. The issue with welding it is the lubricant that has migrated into the case material and it has to be removed which is involved by itself.

 

[Taktiks]

Might be possible to make studs of the appropriate length and weld them to the casting. Would depend on if there is enough room to drop the top cover over the studs.

Might be possible to make studs of the appropriate length and weld them to the casting. Would depend on if there is enough room to drop the top cover over the studs.

I did, and the case being cast iron, I welded it together and with 9 total bolts holding on the cap I think the welds will suffice, at least I hope so. Going to test it with a Peruzzo articulating flail mower. Will proceed cautiously.