Kubota L4310 HST lost power to 3pt hitch and FEL

[SubSubsistanceFarm]

Hi folks. Any help would be greatly appreciated!

I lost any actuation of the 3pt hitch, and front end loader hydraulics on my l4310.

Here is step by step what happened, in case i am missing something.

I was using The L4310 HST to bush hog a field and popped a lynch pin from the mower deck when it bucked when i hit a stone with it.
I was on an steep incline so i tipped the bucket and dropped the loader down to aid the parking brake, and i dropped the 3 point hitch in order to better line the arm back up with the mounting pin.
I proceeded to remove the seat (hinge is rusted off), and open the tool box behind it to dig for a pin, dislodging the usual duff and parts etc that fills up there.
I found a new lynch pin, cranked the adjustment on the right side 3pt arm to line it up with the mounting pin and got back on the tractor to move it forward to line up the pin.
I attempted to lift the FEL and tilt the bucket back so i could move forward, and no movement in any direction of the loader lever did anything, i then checked the 3pt hitch and it did nothing either.
I checked the draft, still nothing.
I looked for a seat switch that may have been deactivated by the PO, or something and did not see anything. Im not sure if this model has one. I looked for a safety switch or anything i may have knocked when digging under the seat and found nothing.
I did not see any obvious damage or hoses ripped, or fluid loss under the tractor with my phone light ( it was getting dark).
Fluid level is correct, which is where it was before i started mowing.
I used a chain and binder on the bucket and limped the tractor back down the hill, being on level ground did not help the issue, HST drive works fine.

Where would you all start with checking on this?
I was professionally trained as an automotive tech and capable at repair and diagnostics, but i was not trained, nor do i know tractor and implement hydraulics well aside from general principals.

Thanks!

Matt

 

[5030]

well aside from general principals.

That should tell you that fluids seek level no matter what the angle of the tractor is at. You fluid is obviously on the low side and it sought level with the tractor on a slope and was starving the hydraulic pump.

 

[SubSubsistanceFarm]

I wanted to post on my way out to work before folks wasted their time thinking about this.
Its not the fluid level, by way of the sight glass its still fine. This tractor loses the HST drive on a steep slope if the fluid is low before the FEL and 3pt hydraulics.

Its more obvious and stupid, and probably evidence i should of not of got on the tractor after work yesterday and already being exhausted.
Now that its light out and i drove the tractor out of the brush i can see that the remote lines are dragged under the mower deck. At one point I had them trucked up and tied up high, but had not checked them in a while, and i was mowing a field of 1-3 inch succession white pine...
Thanks! ill post up the aftermath when i get home

 

[SubSubsistanceFarm]

OK, so I had a chance to look at it in the light without trying to get out the door to work and found a few more things.
I now remember the remotes it ate, were simply hung from the front to the rear not attached to the remote quick connect head in the back, I have never used them as i do not have any attachments that require hydro for the front.
The issue was that the quick connect for the hydraulic line that feeds the FEL was slightly pulled out of socket. The remote line was ran right next to it and when i dropped the mower deck it must of pulled on the line enough to rub that against the quick release collar and trigger it.
I did not realize the 3pt was bypassed and fed behind the FEL when a FEL was connected.
I really got hung up on it maybe being a hidden switch i did not know about under the seat, as we have equipment at work that deactivates like that, and when i was digging under the seat i dislodged lots of stuff that was holding the seat base from springing. It also seemed to have worked fine before i got off the tractor and lifted the seat.

Thankyou for anyone who spent the time to read my silly post!