I have no clue Rebel, hence my frustration. Kubota blows goats getting information out of and not a soul in the world apparently has ever had this problem before.

I told my Kubota guy yesterday that if I had it to do all over again, I'd have bought John Deere simply because they don't treat product information top secret. He didn't seem too pleased, so at least I'm getting him closer to my point of view.

So your 3 point hitch won't work as well as the blade not working? Sounds like the hydraulic pump may be out on the tractor (although I think you said it did work with the lines backwards - but was this just relieving pressure and not actually working). If you can release pressure but not go up, you may have bigger issues than just stuff corrected wrong. Definitely check the oil levels before doing much else.

On the loader/blade, the only other issue may be if you have two different cylinders hooked up to the same circuit. Pair up the hoses and make sure that they operate as a pair. If it worked (backwards) with the hoses hooked up backwards, it doesn't make sense as to why you couldn't just switch the pair and get something out of it. With used equip you never know how someone might have f-ed something up when they were looking for solutions to a problem.

I've gotten on friends' JD tractors and had to deal with their cylinders being hooked up with forward as up and pulling back as down when operating off the remotes, whereas we hook up everything like CanyonAg. Frustrates the hell out of me.

The blade works. The only problem with it is that the up/down is backwards on the joystick, and that's not really a huge issue for me.

It sounds to be if you have hoses crossed from cylinder to cylinder. Say you have remote 1 and remote 2, r1 and r2, cylinder 1 & 2. Then you have an extend and retract hose E and R from each cylinder.

R1 should have E and R from cylinder 1, R2 E & R from C2.

But if you have crossed so that

R1 has C1E and C2R and
R2 has C1R and C2E

You get craziness like cylinders not moving, only moving one direction, or moving up under pressure and simply falling under gravity.

That may be as clear as mud.

But looking at this photo



It appears to me the top two implement lines are larger than the bottom two. And in this photo



It appears to me that both large lines are going to the same cylinder. But if I'm looking at your spool valve correctly, a single cylinder is supposed to hook into the ports vertically, not horizontally.

In other words, a cylinder should be plugged into either the top left/bottom left or the top right/bottom right.

It appears to me that your blade lift cylinder is instead plugged into top left/top right.

Frankly, you pictures don't do me a lot of good. Trace the four implement ports and tell me where the other end attaches.

Other than that, my guess is that port C is pressure line from hydraulic pump, port B is return. Port A is a pressure line that bypasses that spool valve and provides hydraulic power to the three point hitch.

Maybe.

Sounds like you need to get in touch with COSCAG00.

You could swap the cylinder ports for the up/down and left/right to see if there is a problem with the joystick valve. I don't see why switching just the up/down wouldn't work to correct that part of the problem (ETA - assuming you don't have two cylinders hooked up to the same remote (circuit) and outlined in the second paragraph of my prior post and more thoroughly explained in CanyonAg's post).

Good luck.


[This message has been edited by milkman00 (edited 6/13/2012 3:03p).]

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I don't see why switching just the up/down wouldn't work to correct that part of the problem.

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As I said, if the hoses are not paired correctly, switching won't help. Each set of hoses from one cylinder must be plugged into ONE control valve.

I'm with you Canyon. I said basically the same thing you more fully explained in my post just prior to yours, but got lazy in the last one.

You may be bypassing hydraulic fluid. Can you check the relief valve outlet?
So if the relief valve seat has failed then you are pumping fluid in a circle and not getting the fluid to the cylinders at a high enough pressure to lift and move the implement.
The joystick is a 4 way I think and the seats in the valves could be shot as well.
Anything that causes hydraulic fluid bypass will not allow things to move as they should.

That's my daily shot at the issue.

Well, after farting around with it last night, I decided to just use the process of elimination on the 3 hoses not connected to the front blade and swapped them around in various orders.

As luck would have it, I stumbled upon the magic combination at some point, and both my 3 point raises and lowers and my front blade works as well, so that's problem #1 resolved.

Now my issue is that the 3 point wouldn't pick the finishing mower off the ground. Could be a bunch of different things, and this evening and this weekend I'll look into it further. (could be too much slack, need to adjust the turnbuckles, etc.)

My 3 point is rated at just over 1200 lbs 24" back from the PTO, so picking up a 577 lb mower shouldn't be an issue. Again, I'm sure it's something simple, but I need to operate it in daylight to see what all causes could be the culprit.

That and I need to look at how the hoses are installed now and figue out a halfway decent routing for them so that they aren't all over the place. May even look at some tubing in lieu of hoses.

Still suspect you are bypassing hydraulic fluid. That would cause the issue with not being able to lift the mower.

Just re-read your comment about tubing. Do you mean stainless steel? If so, I would be careful. I.D. most likely won't be large enough.
Also it will fatigue fail over time due to flexing with loading / unloading hydraulic pressure. Hoses are a much better answer for what you are doing.

It's entirely possible I'm still not hooked up properly. But, since I can't seem to get any diagrams showing me how to hook it up the right way, this is what I have to deal with.

Yes, may look at running some stainless tubing in select areas over rubber hoses. Still would have flexibility in the right spots, but eliminate some obvious failure points. That's way down the line though.

Figured out my damned problem:

1. Low on hydraulic fluid. Not grossly low, but still low. Fixed that with little problem.

2. There is an adjustable linkage between my control arm and the part that actuates the piston for the 3 point. There was a ton of slack in this adjustable linkage. I took the slack out and made some additional adjustment, and viola - 3 point has full range of motion and picks up the finishing mower with no effort at all.

For something as simple as this was, it was damned aggravating.

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1. Low on hydraulic fluid

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If only someone would have thought of that and told you.

If only...