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  1. #11
    Member
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    Oct 2013
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    40
    Location
    Olalla, WA
    Tractor
    Kubota L5030

    Default Re: L5030 GST Steering Problem

    Thanks David. I don't think I mentioned before, but when driving the tractor I have to start spinning the steering wheel and keep spinning it just to get the turn started. Turning does not begin with a normal rotation of the steering wheel.

    Ben

  2. #12
    Elite Member Tx Jim's Avatar
    Join Date
    Jan 2007
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    3,718
    Location
    Coyote Flats,Tx
    Tractor
    JD 4255/Kubota M7040 HDC

    Default Re: L5030 GST Steering Problem

    If seal is actually blown on steering cyl piston with wheels turned full right one should be able to remove hyd hose(LH turn hose) from steering cyl and continue turning steering wheel to right and if seal is blown oil should come out cyl fitting where hose was attached.

  3. #13
    Member
    Join Date
    Oct 2013
    Posts
    40
    Location
    Olalla, WA
    Tractor
    Kubota L5030

    Default Re: L5030 GST Steering Problem

    Thanks Jim. I will try this test as well. I need to pinpoint where the problem lies since much effort is involved in either pulling the steering cylinder to replace seals or the very expensive replacement of the controller. I do not want to attack the problem from the wrong direction and I don't possess knowledge enough regarding the steering system to locate the faulty part, so suggested procedures like this are a great help in pinpointing the problem.

  4. #14
    Veteran Member David_Kb7uns's Avatar
    Join Date
    Aug 2005
    Posts
    1,002
    Location
    Willamette Valley Oregon
    Tractor
    Kubota X 4

    Default Re: L5030 GST Steering Problem

    Other then pressure/flow gauge or taking cylinder to shop for testing not much else you can do.

    David Kb7uns
    Grand L3130GST LA723 Loader, ATI grapple, ATI grapple bucket, WR Long front remote, Kubota rear remotes, Bradco 408 Backhoe with thumb, 60"KK brush hog, 60" RM Finish Mower, Speeco Post Auger, 72" KK rear blade, 60" box blade
    BX2230 LA211, RCK60, GCK60 Bagger,42"Land Pride Tiller, XB BB, XB RB, rake, Fimco 3PT sprayer
    G2160 RCK60 Mower
    RTV1100 Orange, Work Lights, Front Rear Winch,Rear Screen, High Mount air cleaner, water seperator
    2010 Polaris RZR 800 S
    2007 CAN AM Outlander 800 LTD

  5. #15
    Member
    Join Date
    Oct 2013
    Posts
    40
    Location
    Olalla, WA
    Tractor
    Kubota L5030

    Default Re: L5030 GST Steering Problem

    David, I hope to be able to pinpoint the problem without resorting to testing with a flow gauge or pulling the cylinder and taking it in for testing. I did not have a chance today to pull a cylinder hose and test for bypass as Tx Jim suggested trying. I hope to do that tomorrow and after researching prices, I hope it is the cylinder seal that is bad. The controller is very expensive.

    Ben

  6. #16
    Member
    Join Date
    Oct 2013
    Posts
    40
    Location
    Olalla, WA
    Tractor
    Kubota L5030

    Default Re: L5030 GST Steering Problem

    Okay, I tried turning wheels all the way to the right, disconnecting the hose from the left side of the cylinder and continued turning steering wheel to the right. Fluid came out of the left side hose, but not the cylinder fitting. What does this indicate? To be clear, there was so much fluid coming out of the hose that I could not be sure none at all was coming out of the cylinder fitting. I don't think there was, but I didn't have someone with me to observe the fitting up close. Should the fluid be coming out of the hose at all?

    Thanks,
    Ben

  7. #17
    Elite Member Tx Jim's Avatar
    Join Date
    Jan 2007
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    3,718
    Location
    Coyote Flats,Tx
    Tractor
    JD 4255/Kubota M7040 HDC

    Default Re: L5030 GST Steering Problem

    Quote Originally Posted by BenH View Post
    Should the fluid be coming out of the hose at all?Thanks,
    Ben
    No fluid should be coming out of hose. I think your tractor has a faulty steering valve.

  8. #18
    Member
    Join Date
    Oct 2013
    Posts
    40
    Location
    Olalla, WA
    Tractor
    Kubota L5030

    Default Re: L5030 GST Steering Problem

    Jim, the faulty steering valve is the steering controller, correct? I found a diagram of the steering system online and it looks like, since fluid is getting to the hoses which connect to the cylinder from the controller, that something in the controller is failing to control direction of flow. If my understanding is correct, when the wheel is turned right then flow to the left side should be blocked and that is a function of the steering controller. Am I right in assuming that if the cylinder seal was bad, that fluid would have blown out the cylinder fitting and not the hose end?

    Much appreciated,
    Ben

  9. #19
    Elite Member Tx Jim's Avatar
    Join Date
    Jan 2007
    Posts
    3,718
    Location
    Coyote Flats,Tx
    Tractor
    JD 4255/Kubota M7040 HDC

    Default Re: L5030 GST Steering Problem

    Quote Originally Posted by BenH View Post
    Am I right in assuming that if the cylinder seal was bad, that fluid would have blown out the cylinder fitting and not the hose end? Much appreciated,
    Ben
    Yes I think the steering cylinder is good and the control valve is faulty. Your kubota dealer service manager may have a better way to diagnose the steering problem.

  10. #20
    Veteran Member David_Kb7uns's Avatar
    Join Date
    Aug 2005
    Posts
    1,002
    Location
    Willamette Valley Oregon
    Tractor
    Kubota X 4

    Default Re: L5030 GST Steering Problem

    To steer right fluid must go into left side of cylinder to make the shaft extend to the right.

    David Kb7uns
    Grand L3130GST LA723 Loader, ATI grapple, ATI grapple bucket, WR Long front remote, Kubota rear remotes, Bradco 408 Backhoe with thumb, 60"KK brush hog, 60" RM Finish Mower, Speeco Post Auger, 72" KK rear blade, 60" box blade
    BX2230 LA211, RCK60, GCK60 Bagger,42"Land Pride Tiller, XB BB, XB RB, rake, Fimco 3PT sprayer
    G2160 RCK60 Mower
    RTV1100 Orange, Work Lights, Front Rear Winch,Rear Screen, High Mount air cleaner, water seperator
    2010 Polaris RZR 800 S
    2007 CAN AM Outlander 800 LTD

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