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  1. #1
    Bronze Member
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    Jul 2011
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    IH 684

    Default A need a hydraulic genius

    His is going to be long so bear with me. I have a Case IH 885 w/cab that I bought. It was a county mowing tractor and has one factory remote. That decided they need 4 remotes and put a three spool valve in the cab (dumb in my opinion). I have a hydro swing windrower that I am trying to run that needs two remotes. When I hooked up the windrower and tried to swing it the pressure relief valve would bypass on the added valve. It was non adjustable and set at 1750psi. That was first cutting of hay and I said screw it and just used my old tractor. Now I just picked up some more acres and it is hot as **** out and I want to cut in ac. So I have an old loader valve that I put in place of the three spool. Now when I try to swing it will only swing one way. If I switch the hoses it will only swing the other way. It does this on both spools. If I hook it up to the factory vale it works fine but someone must have decided that they didn't want that valve and they cut the handle off under the cab (again dumb in my opinion). I have to crawl under the tractor to get it to work. I am stumped and I prob will just fab up a handle real quick so I can cut. I would like to figure it out what is wrong but I already have two factory valves that I am going to add this fall when I have more time to build the controls for them because I cannot find them anywhere. Sorry for the extremely long post but any help is appreciated. Thanks.

  2. #2
    Super Star Member
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    Mar 2008
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    11,238
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    Northern Fingerlakes region of NY, USA
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    Kubota L3830GST, B7500HST, BX2660

    Default Re: A need a hydraulic genius

    Do you have a picture of this loader valve as it sits? And/or a make/model?

    I have some ideas, but I dont want to mislead you.

    Thanks

    Aaron Z
    A human being should be able to change a diaper, plan an invasion, butcher a hog, conn a ship, design a building, write a sonnet, balance accounts, build a wall, set a bone, comfort the dying, take orders, give orders, cooperate, act alone, solve equations, analyze a new problem, pitch manure, program a computer, cook a tasty meal, fight efficiently, die gallantly. Specialization is for insects.
    Robert Heinlein, Time Enough for Love

  3. #3
    Gold Member
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    Nov 2006
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    396
    Location
    Barossa Valley, South Australia
    Tractor
    Duetz DX3.70, Fendt 305LSA,260S & 205P,Kubota B6100E & 3 x B5100E & RTV900, Caterpillar 428C

    Default Re: A need a hydraulic genius

    Could it be a problem with the couplers - I'm assuming there are couplers between the valve and the cyl?

    Maybe not fully coupled or an incompatibility problem where the poppets aren't fully depressed.

    Perhaps try bypassing the couplers - let us know how you go.

  4. #4
    Bronze Member
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    Jul 2011
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    IH 684

    Default

    Here is a picture of the loader valve in the cab and the outlets at the back. The loader valve is plumbed before the factory valve.
    Attached Thumbnails Attached Thumbnails -image-3609432320-jpg   -image-2017008501-jpg  

  5. #5
    Super Star Member J_J's Avatar
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    Sep 2003
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    17,861
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    JACKSONVILLE, FL
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    Power-Trac 1445, KUBOTA B-9200HST

    Default Re: A need a hydraulic genius

    Have you checked to see if you have the hoses plugged into the same spool.

    With all those QD in the back, you could have mistakenly plugged one cyl hose in spool 1, and then plugged the other cyl hose into spool 2. When you try to use the hyd, the relief comes on, and nothing works.

    Did this start after you made some changes?

    Work port A of the spool should go to the base end of the cyl, and work port B should go to the rod end of the SAME cyl.

    All valves should be in series and the first valve upstream will have priority and if using that valve there might not be any fluid left for the rest of the hyd system.
    J.J.

    When I works, I works hard. When I sits and thinks, I goes to sleep.

    Git er done.

  6. #6
    Super Star Member
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    11,238
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    Northern Fingerlakes region of NY, USA
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    Kubota L3830GST, B7500HST, BX2660

    Default Re: A need a hydraulic genius

    -valve-jpg
    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
    A human being should be able to change a diaper, plan an invasion, butcher a hog, conn a ship, design a building, write a sonnet, balance accounts, build a wall, set a bone, comfort the dying, take orders, give orders, cooperate, act alone, solve equations, analyze a new problem, pitch manure, program a computer, cook a tasty meal, fight efficiently, die gallantly. Specialization is for insects.
    Robert Heinlein, Time Enough for Love

  7. #7
    Super Star Member J_J's Avatar
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    17,861
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    JACKSONVILLE, FL
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    Power-Trac 1445, KUBOTA B-9200HST

    Default Re: A need a hydraulic genius

    Aaron Z,


    You might check the labeling for the work ports.

    If the valve work ports is labeled A,B,C,D, then the A and C ports are located close to the handle , and B and D are located close to the bottom.

    http://www.surpluscenter.com/Instruct/I9-7862-F.pdf

    http://www.surpluscenter.com/Drawing/DR9-7862-F.pdf

    Some valve us A1, and B1, and A2, and B2
    J.J.

    When I works, I works hard. When I sits and thinks, I goes to sleep.

    Git er done.

  8. #8
    Super Star Member
    Join Date
    Mar 2008
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    11,238
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    Northern Fingerlakes region of NY, USA
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    Kubota L3830GST, B7500HST, BX2660

    Default Re: A need a hydraulic genius

    Quote Originally Posted by J_J View Post
    Aaron Z,
    You might check the labeling for the work ports.
    If the valve work ports is labeled A,B,C,D, then the A and C ports are located close to the handle , and B and D are located close to the bottom.
    http://www.surpluscenter.com/Instruct/I9-7862-F.pdf
    http://www.surpluscenter.com/Drawing/DR9-7862-F.pdf
    Some valve us A1, and B1, and A2, and B2
    I was putting an arbitrary label on the ports to distinguish them, not trying to find the manufacturer's markings. Looking at http://www.surpluscenter.com/Instruct/I9-7862-F.pdf the ports are in line with the handle (ie: my arbitrary labels of A/B or C/D for work port pairs match with the cylinder connections shown).

    Aaron Z
    A human being should be able to change a diaper, plan an invasion, butcher a hog, conn a ship, design a building, write a sonnet, balance accounts, build a wall, set a bone, comfort the dying, take orders, give orders, cooperate, act alone, solve equations, analyze a new problem, pitch manure, program a computer, cook a tasty meal, fight efficiently, die gallantly. Specialization is for insects.
    Robert Heinlein, Time Enough for Love

  9. #9
    R.I.P.
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    Dec 2008
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    5,883
    Location
    North Carolina
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    Kubota BX2200

    Default Re: A need a hydraulic genius

    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.

  10. #10
    Bronze Member
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    Jul 2011
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    Tractor
    IH 684

    Default

    [QUOTE="J_J"]Have you checked to see if you have the hoses plugged into the same spool.

    With all those QD in the back, you could have mistakenly plugged one cyl hose in spool 1, and then plugged the other cyl hose into spool 2. When you try to use the hyd, the relief comes on, and nothing works.[/QUOTE

    I had them plugged in wrong the first time I tried. I got a nice fluid bath from one of the hoses that wasn't hooked up.


    [QUOTE="J_J]Did this start after you made some changes?[/QUOTE

    I couldn't get it to swing either way when I had the three spool in there. I could hear it bypassing at the valve both with the three spool and with the OEM valve.

    Quote Originally Posted by "J_J
    Work port A of the spool should go to the base end of the cyl, and work port B should go to the rod end of the SAME cyl.

    All valves should be in series and the first valve upstream will have priority and if using that valve there might not be any fluid left for the rest of the hyd system.

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