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  1. #1
    New Member
    Join Date
    Nov 2011
    Posts
    2
    Tractor
    John Deere 310 SE

    Default Extend not working right

    My JD 310 SE extend a hoe retracts fine but doesn't extend well. Low power and very slow. You can hear hissing from the control valve as if you are slightly moving the control. I checked for proper linkage travel and it is fine. If I hold the lever for the main arm in the lowering position while I extend the hoe it works fine (hoses must be fine). Any one have and insight? Thanks for the help.

    Alan

  2. #2
    Veteran Member
    Join Date
    Feb 2011
    Posts
    2,419
    Location
    Trivoli, IL
    Tractor
    SSTT (Sideways Snake Tain Tractor) and STB (sideways train box) tractor, dirt harvester

    Default Re: Extend not working right

    relief valve i would assume.

    if everything else works. including retracting of the extend. i would assume, there is a relief valve to keep the extend from breaking / bending. and with that the relief value, is more likely letting partial hyd oil pass through the relief.

    double check the manufactor website John Deere Home Page Redirect, if memory serves john deere has free online manuals for parts and like. that should help ya locate relief valve.

    been someone time since i looked at a extend, does yours have any sort of lock? for transportation just for the extend? doubtfull. but seen a good amount of backhoes have the rear transport lock for the entire hoe. torn off. due to folks not paying attention and trying to move BH before undo transport lock.

    *shrugs* not a mechanic, suggest waiting for other replies.
    Ryan

  3. #3
    New Member
    Join Date
    Nov 2011
    Posts
    2
    Tractor
    John Deere 310 SE

    Default Re: Extend not working right

    Thanks for the redirect link - helpful! Also my machine has no extend lock. It does have locks for the boom.

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