Broken hydraulic Cylinder Case

[Taktiks]

Got post hole digger leveraged in a clay hole and the rear case broke apart. So odd as I have dug many a hole. I think I may have tried to upright the auger and a whole lot of force was exerted on the 3pt lift arms.
Anyway, disassembled, purchased new cover but contemplating how to go about fixing the two broken apart bolt holes? The third one sheered off and I will weld a nut on and extract.
The cover is held on with several more bolts so how important is the integrity of the two broken apart holes? Do not want to replace entire case.
Weld, drill, tap? JB Weld? Drill and tap two new holes next to the broken ones? Any ideas? Dunno.

2017 Branson 2400H 150 hours
Top and Tilt hydraulics
Hydraulic diverter/3 rear spools
Peruzzo Fox Cross Flail Mower (excellent machine)
Frontier 48" Tiller
Speeco Auger (need reversible)
Amsung 60" belly mower
Pallet Forks
Box Grader
Rotating aerator
Quick hitch

 

[BeezFun]

Wow man, that is quite a break. If you have the small pieces of the casting that complete those bolt holes I think they could be welded back together since that casting probably hasn't absorbed any oil and it's got enough mass to be able to sink the heat from welding. Take it to someone who does castings a lot, or take them some photos. If they have a mobile setup they might be able to come to you. The will probably tig weld or tig braze that.

 

[Leejohn]

I would buy a new rockshaft housing and repair the 2 bottom casting bolt holes. You better check the 3 pt piston and make sure the relief valve (safety valve) is set right .

 

[LD1]

Any warranty left or help from the dealer?

I have seen top-links rip the rear of the tractor apart like that....but its usually because of people using 3ph backhoes, or logging winches, or the dynamic forces of having something really heavy back there and driving over rough ground.

But I have NEVER seen one fail due to just the static forces of the 3PH lifting. There is no way under hydraulic lifting power alone that the tractor should be able to destroy itself

 

[Harry in Ky]

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.

 

[KWentling]

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.

 

[5030]

tig braze that.

What the heck is TIG brazing?

 

[BeezFun]

What the heck is TIG brazing?

It's just like oxy acetylene brazing but you don't need flux because you have a shielding gas. It doesn't melt the base metal, just the filler, so it can be done with less heat transfer into the base metal. It uses different filler, it's much cleaner and easier than using oxy.

 

[5030]

Never heard of it but I'll take your word for it. I TIG weld all the time. Mostly stainless and aluminum

 

[BeezFun]

Never heard of it but I'll take your word for it. I TIG weld all the time. Mostly stainless and aluminum

Brazing works well for joining 2 different metals. Since you already know how to tig it would be easy to do, the standard filler is silicon bronze which will work on almost everything. Use DC and lower current so you just melt the filler. For cast iron you can use AC and aluminum bronze filler, the AC gives you the same cleaning action on the casting that you get when you weld aluminum.