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Sure, ready for another step. Hope it doesn't give me a hydraulic oil shower but am so frustrated I will risk even that !!

Sorry for the double answers. After posting I did not see my first answer so assumed it went to bit purgatory and answered again.

I did the test with the male connector back in. This time fluid came out of the hose with the female coupler removed. The bucket also raised. Unfortunately, I don't know whether it raised when the test was done with the naked spool valve port - I was distracted by the oil gusher.

I wish I had a hose with a fitting I could screw into the naked port to watch it over a longer time.

Now things were more controlled. Oil came out of the hose with coupler and arms rose. Unfortunately, I don't know whether they rose for the test with the naked open valve port - I was so concerned about the geyser that I didn't notice.

OK

Can't measure it, but I think more came from the open port.

Out of the hose through the couplers

I did the test, at idle for sure. I covered the naked port with a cap too large to screw on but covered the naked system. Results were unexpected: fluid rushed from both the hose and the naked port. I was very careful pulling the joystick so only my hands and arms were oiled.

Did as directed but results not expected: very, very careful joystick movement kept oil spill to a minimum but it came from BOTH the hose and the open valve port. Interpretation?

I understand this defeats the quick connects ability to stop flow when hoses are disconnected. So if fluid comes out of the unseated male disconnect, I assume this means all is working as it should. But with the weird behavior I have seen, I will be ready to see the tape blown off the naked open...

The collars on the male ends of the quick connects were not removed when they were swapped but I suppose they could have been so you wouldn't know that. Swapping the loader hoses by moving the female quick connects was one of the first things I tried before any other attempts at diagnosis and...

OK, tell me how to diagnose it. Allen

Bucket and boom connectors are on the correct spool valve ports. Bucket works fine, boom now goes up when stick is pushed forward. It's easy to be sure they are connected correctly due to the easy to tell apart color-coded collars on both male and female quick connects. That business of the...

Sorry I didn't answer earlier - I missed your post. Here is the problem: Initially the loader would not lower when the control stick was pushed forward. It would rise, but jerky. This problem started as an intermittent malfunction that has steadily gotten worse. Now pushing the stick forward...

I reconnected the 3rd func line. Now the backhoe works. Also set the 3-point hitch control to low. But the problem remains. I mentioned earlier that pushing the control lever forward to lower the arms was tending to cause them to rise - now that backwards response is stronger. Thank you for...

I am learning! I did not know the fundamental fact that with a closed hydraulic system, like this tractor has, everything is plumbed in series. I think it goes: pump ➡️ loader valve ➡️ 3rd func valve ➡️ backhoe ➡️ 3-point hitch (should be in lowest position when using other hydraulics) ➡️ tank...

You are onto something. I traced the T line to the backhoe so I know that's where it goes. There are only 2 hoses for the backhoe so the 3rd func T line can't just be going to a tank connection in the backhoe because that would require 3 hoses to the backhoe. Did you say something about a power...

Here is a hydraulic flow diagram from WR Long that matches my tractor configuration. It doesn't show a return to the loader valve and I don't have a connection between the 3rd function and the loader valve other than the P hose. The T hose from the 3rd func heads back toward the backhoe...

My 3rd function is by W R Long so it has solenoids and not a spool valve (wish it did have a spool valve because that would make it easier to control the angle of my snowplow). Anyway, I have it unconnected to the power beyond so it can't be an issue. The only 3rd function part connected is the...