NX6010 suction side hydro leak

   / NX6010 suction side hydro leak #191  
I think my analysis and troubleshooting are going to to be put off a few days. Supposed to be like 104 degrees (F) here today, with a heat index of 110+. :fire::fire::fire:
 
   / NX6010 suction side hydro leak #192  
After 2 1/2 years is there any update/conclusion?
 
   / NX6010 suction side hydro leak
  • Thread Starter
#193  
If that was to me, yes, it's finally resolved.

The first problem was the filter housing. Kioti apparently had a few bad castings, it looked fine, but the insisted we replace it before they'd send a new pump (which is what my dealer and I both thought it was). Well, wouldn't you know, that was the end of the problem!

I did have this issue come back some time later, this time it was my fault, I must have hit something that jostled the connection to the filter housing. So, 15 gallons of hydro fluid out, once again. Changed out the o-rings and seals on both the inlet and outlet (to the filter). I also used a hydraulic gasket maker this time that's rubberized, hopefully that'll let me survive a bump to the pipes again. I really need to have a skid plate welded up, the "problem area" is also one of the lowest things on the tractor and is designed in a way that's easy to snag if you go into the woods.

If you're getting bubbles or jerky movements, for sure, the first place to look is that suction side filter assembly. Clearly a weak point in the tractor design.
 
   / NX6010 suction side hydro leak #194  
If that was to me, yes, it's finally resolved.

The first problem was the filter housing. Kioti apparently had a few bad castings, it looked fine, but the insisted we replace it before they'd send a new pump (which is what my dealer and I both thought it was). Well, wouldn't you know, that was the end of the problem!

I did have this issue come back some time later, this time it was my fault, I must have hit something that jostled the connection to the filter housing. So, 15 gallons of hydro fluid out, once again. Changed out the o-rings and seals on both the inlet and outlet (to the filter). I also used a hydraulic gasket maker this time that's rubberized, hopefully that'll let me survive a bump to the pipes again. I really need to have a skid plate welded up, the "problem area" is also one of the lowest things on the tractor and is designed in a way that's easy to snag if you go into the woods.

If you're getting bubbles or jerky movements, for sure, the first place to look is that suction side filter assembly. Clearly a weak point in the tractor design.
I have also snagged my filter housing and tore that small section of suction hose. I replaced it with a clear piece of hose from Lowes. So far that hose has worked out fine for me. On the plus side, you can see the fluid going thru the hose.
 
   / NX6010 suction side hydro leak #195  
Overtaxed, many thanks for the excellent reply/follow-up. I just like to see succinct wrap-ups of issues. I don't have this same issue, but will certainly log all of this away in case I need to address the issue in the future.
 
   / NX6010 suction side hydro leak
  • Thread Starter
#196  
Well, here we are, a few years later, and the problem seems to be coming back. Same issue, air getting into the lines, jerky movement, bubbles if you look in the rear fill port. <sigh> Going to have to take a long look at it again, I did need to reseat everything on the filter housing a few years ago, perhaps it got bumped again and something is out of alignment?

Anyone else still dealing with this issue? Has Kioti issued any better "fixes" to prevent this from reoccurring? I'm wondering if it's the filter housing (again) that's developing a wear related leak? Seems crazy, but I know that was the fix once, if swapping it out again fixes the problem, there's clearly something very wrong with however they are casting those units; filter housings aren't exactly "wear parts"!
 
   / NX6010 suction side hydro leak #197  
Well, here we are, a few years later, and the problem seems to be coming back. Same issue, air getting into the lines, jerky movement, bubbles if you look in the rear fill port. <sigh> Going to have to take a long look at it again, I did need to reseat everything on the filter housing a few years ago, perhaps it got bumped again and something is out of alignment?

Anyone else still dealing with this issue? Has Kioti issued any better "fixes" to prevent this from reoccurring? I'm wondering if it's the filter housing (again) that's developing a wear related leak? Seems crazy, but I know that was the fix once, if swapping it out again fixes the problem, there's clearly something very wrong with however they are casting those units; filter housings aren't exactly "wear parts"!

FWI, if I remember from replacing the lower housing when it got bashed years ago, the suction side is sealed with O-rings (sorta like flat-faced hydraulic hoses), and with new parts, I still had to fiddle a bit to get it to seal properly.
 
   / NX6010 suction side hydro leak #198  
FWIW, my tractor has a hydro leak that is bad enough to be dumping about a gallon out every hour. Since it is getting cold out, my tractor came back to the Tinkerage and after trying to puzzle out the problem, I ordered hydraulic fluid dye and a black light and pressure washed everything.

As suggested above, it looks like it may be coming from the hydraulic pump, but everything is so slimed up, that I'm cleaning everything up as best as I can and will mix in the dye and use a black light to try to locate the source of the leak. Dye is a week out. Bummer.

IMG_8364.jpeg
 
   / NX6010 suction side hydro leak
  • Thread Starter
#199  
FWIW, my tractor has a hydro leak that is bad enough to be dumping about a gallon out every hour. Since it is getting cold out, my tractor came back to the Tinkerage and after trying to puzzle out the problem, I ordered hydraulic fluid dye and a black light and pressure washed everything.

As suggested above, it looks like it may be coming from the hydraulic pump, but everything is so slimed up, that I'm cleaning everything up as best as I can and will mix in the dye and use a black light to try to locate the source of the leak. Dye is a week out. Bummer.

View attachment 1592440

Did you have a chance to sus this out Eric? Mine is giving me problems again, similar symptoms to before, air in the lines; probably not the same issue (I'm not leaking fluid) but maybe your problem can point me to somewhere else to look?
 
   / NX6010 suction side hydro leak #200  
Did you have a chance to sus this out Eric? Mine is giving me problems again, similar symptoms to before, air in the lines; probably not the same issue (I'm not leaking fluid) but maybe your problem can point me to somewhere else to look?
I did. I had a hardline leak off of the pump and down where that hardline attaches to a bracket, a soft line going to the joystick was also leaking.

Rear hardline leak.jpg


IMG_8453.JPG
 

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