A need a hydraulic genius

[huskerhayman]

<img src="http://www.tractorbynet.com/forums/attachment.php?attachmentid=273166"/>
Just to confirm, you are connecting to the lines which lead to A and B, or C and D (as seen in the picture above) not any other combination?

Aaron Z

That is the way I have them hooked up. I will have to double check and make sure they are not switched.

 

[huskerhayman]

I'm not a hydraulics genius, but when I do try to sort this stuff, I pay a great deal of attention to hydraulic relief noises, and hydraulic hose "dancing." Hoses dance when pressure hits them. Were I you, what with the different tractor and all, and the different coupler possibilities, I'd change all couplers to YOUR standard coupler for your farm, and I would have one coupler set with a gauge attached.

A person like you will see enough issues with acreage and multiple tractors to where you could instead of hooking a gauge to a quick coupler half, get a tee and YOUR standard quick coupler set, and hook a female QC to one side, a male QC to the other, and the gauge to the third port in the middle. That would allow you to check all quick couplers, all pressure lines and all return lines, and help you discover odd problems.

That is a great idea to make the test gauge with the QC. I have everything to make it but a gauge. I will pick one up today and try it out.

 

[J_J]

Reasons for the relief to go off could be:

Cyl at end of travel.

QD uncoupled.

Mismatched ports.

No return path from the cyl. Wrong port, or QD disconnected.

Collapsed cyl hose.

If using hyd motor, a stalled motor.

With all valves in neutral, should be no or very little pressure in the system.

Can you put a gage in the FEL IN port and take some pressure readings. This may tell you which spool on which valve is causing problems.

 

[aczlan]

Could also be a bad QD on the tractor side. I picked up a set of small QDs a few years back (1/4" to match what was on the B and BX) and one of the male QDs locks up under pressure as I found when I tried to use them this summer on the baler.
Either way, the issue should be verifiable with the gauge on the valve as J_J said.

Aaron Z

 

[J_J]

Are you using any single action cylinders [ SA ] on the implements you are using now?

 

[huskerhayman]

Are you using any single action cylinders [ SA ] on the implements you are using now?

The swing cylinder is DA the raise is single acting on the windrower. I think Aaron Z might be on the right track that the QA couple on the tractor may be the culprit. I will have to check them out tonight. That would explain why it would go the other way when I would switch the hoses.

 

[EE_Bota]

I have had new QC pairs that would not work with each other...and they were a matched set. Instead of having limits on the stroke on the poppets, some manufacturers don't limit that poppet stroke, so the springs have to match force well enough, else both poppets may shift leaving one wide open, and the other fully or partially closed. That will cause the relief to sound, and if you push it, it will extrude the rubber poppet seal, if present.

 

[Leejohn]

The pic of the back of the tractor of the couplers how are you reading or how they match each other? The 2 hoses that are hooked up I would say that is not a match.

 

[huskerhayman]

The pic of the back of the tractor of the couplers how are you reading or how they match each other? The 2 hoses that are hooked up I would say that is not a match.

I read them by following the hoses but for the factory setup there are colored stickers on each side that match the color of knob on the handle in the cab. It is a little different how they hook up so far apart, but that bottom set is the only ones that work correctly.

Last night I just Fixed the handle for the factory valve to get me going. I had to fix my windrower also. Now i get to haul my 14' wide windrower 20 miles to the field across town (should be fun) and get going. Hope nuthin breaks for once.

 

[Leejohn]

Hope your trip went ok. I don't think I would of done that I don't like to pull anything on the roads.
Back to the way you hook up, lets say you have a red knob in the cab, what two couplers do you us in back for the red knob?