Well to finish off on a good note...
Went to the dealer today. Apparently no parts on this continent.
It was the part number 58 that Dave suggested. $120 up here in chinada. Ebay sells similar in the states for $30ish.
Said 6-8 weeks minimum as it would be coming from Korea apparently. Blows my mind how they can sell these tractors over here by the thousands and not have spare parts available.
Anyways, while speaking with the parts guy, a mechanic walked by. Got talking to him for a bit. Then he dissappears in the back and comes back out holding a part that looks just like my broken one! Turns out he was working on a different kioti tractor and had to replace few parts. This one came from the old unit. And it was exact fit! Different stamp on it but same otherwise. Has rubber rings in the middle of body with a slip on bearing that holds the piston (part #37)
Apparently no gasket otherwise i was told, friction fit only (eventhough I remember seeing bits and pieces of what looked like a skinny o ring once the part blew up) mind you it was dark and I wasnt sure.
$20 later and a promise of a case of beer I ran home with the part happy like pig in $hit!
Put the damn part it, tightened the 2 allen screws, mounted everything back on, turned tractor on and engaged the hydraulics for the backhoe, and wouldn't you know it the damn part started hissing and spraying oil like a fountain. Again!
Turned off everything, took the part off, cleaned everything, reassembled it all again, and again same issue. I must have gone through half a gallon of oil messing with it. I tried a slew of various o rings (there was no grove for an o ring placement on top of the end cap so they kept just sliding out and leaking once oil pressure in the system, I didn't have any of those flat asbestos type, only rubber o rings)
After couple of agonizing hours, busted knuckles, and even more oil, I accidentally noticed the piston that protrudes out and sits in the end cap (part #37), on top had a brass collar that appeared to have a grove in it, and looked almost like there should be an o ring in there. Most of that time that part was inside of the valve body and not visible so I kept missing it I guess.
See picture for better understanding.
Anyways, had to use an extra small oring and stretch it since mine were all too fat, but I managed to slip one on.
Put the bolts in. Started everything up. And it's all holding!
Ended up using the hoe for the rest of the evening digging a trench and ripping up some old concrete and no issues so far.
How this all failed I have no idea. Must have been a domino effect of catastrophic failures. The mechanics were all stumped. Never seen it apparently. But all are telling me most likely as result of outside storage and cold and moisture in the lines.
One of them told me to add couple of cups of diesel conditioner into the oil (kleen-flo) and it would dry the oil and keep water and ice from forming in the future. So I did that too.
Anyway, will be ordering the original o ring once I find the part number and replace it in the future. Feel like my fat cheap Chinese o ring will fail eventually, but a good temporary fix so far, seems to be holding.
Hopefully this helps someone in the same boat especially the northerners like me dealinf with frozen lines.
Dave any way to look up part #37? What's the part number for that? Thank you.
