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  1. #1
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    Detroit and central michigan

    Default Hydralics only work when a backhoe valve is cracked open slightly?

    I installed a log splitter and hydraulic thumb in place of the backhoe bucket for some logging projects. When I operate the splitter or new hydraulic thumb they only operate when I have one of the other backhoe valves slightly open. I am not sure if this is a priority problem or possibly using a closed center control valve in an open center system. I am still not sure it is open centered per link and previous questions:

    TractorByNet.com - Compact Tractor Forum

    The splitter and claw work awesome but when pressure goes high the backhoe valve which is cracked slightly open then operates causing that cylinder to operate. It would be alright except it can be violent when a non splitting piece of wood is encountered and all of a sudden the other circuit (cracked open slightly) takes over quickly?

    I have tried replumbing to a second outlet port and the control valve and is tapped right into the inlet and outlet lines which feed and return to all the backhoe valves (second picture). Shown in picture with both inlet and outlets on same side of valve(second picture). The third picture show the loader valve which supplies hydraulics to the rear. There is an additional port on the bottom but it is not labeled on loader valve? There is another port on the opposite side of the rear control valve plumbed to the splitter and thumb but it is not labeled either(second pic). The valve being used is a husco valve. Any ideas?
    Attached Thumbnails Attached Thumbnails Hydralics only work when a backhoe valve is cracked open slightly?-tractor-1-jpg   Hydralics only work when a backhoe valve is cracked open slightly?-tractor-2-jpg   Hydralics only work when a backhoe valve is cracked open slightly?-0305101423-00-jpg  

  2. #2
    Advertiser kennyd's Avatar
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    John Deere 4110, 455AWS

    Default Re: Hydralics only work when a backhoe valve is cracked open slightly?

    I just replied to your other post...please do not double post-it makes it VERY hard to help you when answers/suggestions are spread between forums.
    KennyD
    www.boltonhooks.com

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    Bolt On Grab Hooks, Weld On Grab Hooks, Specialty Chain and Rigging Accessories, Specialty Hydraulic Components, and MUCH more!

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  3. #3
    New Member
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    Default Re: Hydralics only work when a backhoe valve is cracked open slightly?

    Thanks Kenny your a lifesaver. Should I remove this post or the one in the massey furgusion section. I was not sure I posted it in the right forum.
    Thanks again!

  4. #4
    Advertiser kennyd's Avatar
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    Westminster, MD
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    John Deere 4110, 455AWS

    Default Re: Hydralics only work when a backhoe valve is cracked open slightly?

    Quote Originally Posted by Tim Dawson View Post
    Thanks Kenny your a lifesaver. Should I remove this post or the one in the massey furgusion section. I was not sure I posted it in the right forum.
    Thanks again!
    Click the red triangle under your username and ask a moderator to merge the two separate ones into the hydraulics forum...this is a hydraulics question rather than a MF one.
    KennyD
    www.boltonhooks.com

    #BoltOnHooks



    Bolt On Grab Hooks, Weld On Grab Hooks, Specialty Chain and Rigging Accessories, Specialty Hydraulic Components, and MUCH more!

    Simple JDParts Tutorial HERE

    Visit our YouTube Channel

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