All hydraulics quit working on BX25

[jtriplett41]

Yesterday while mowning the lawn, my glow plugs indicator light came on, then I noticed a slight vibration in the steering, went to raise my mower deck and it would not raise. PTO is still working. But none of my hydraulics will work. Checked the hydraulic level, it is full. Checked fuses, they are good. Disconnected and reconnected all quick connects, hydraulics still won't work.
Any help would be greatly appreciated.

 

[bxray]

How old is the filter?
It still moves forward and back?
May be a stuck valve?

 

[jtriplett41]

The hydraulic filter was changed a few months ago. The HST still works and the tractor drives fine. The power steering still works as well. The loader, the mower deck and the three-point hitch are the implements with no hydraulic pressure. There does not appear to be any hydraulic leaks. I am wondering if there is a relief valve stuck open somewhere?

 

[D2Cat]

Might disconnect each quick connect, one at a time, and be sure they are all seated fully.

 

[jtriplett41]

Thanks for the suggestion D2Cat. I went through all of the quick connects and checked they were in good working order and then re-seated them. Unfortunately this did not correct the problem. Reviewing the Kubota service manual hydraulic circuit, I can see that the PTO, power steering and HST are on a separate circuit from the backhoe, loader and 3-point hitch. So maybe I just have something blocking a line in that separate circuit? It looks like the loader comes before the 3-point hitch so maybe I will look deeper into the loader control valve.

 

[jtriplett41]

Found the problem. The female quick connect on the power beyond port on the back of the tractor was blocked/closed (not sure which only that hydraulic fluid was not getting past it). Swapped it out and all works well again!

 

[D2Cat]

Good, you got it solved. Nice for you to come back and say what it was. That is what helps folks in the future who do a search looking for a similar problem's solution.

 

[AndyM]

Any ideas as to what would cause the port to plug up? Failure of the plug itself or a fluid issue?