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  1. #1
    New Member
    Join Date
    Jul 2009
    Posts
    17
    Location
    GA
    Tractor
    Kubota M6800 4x4, ZD326, JD140

    Default B7800 lift problem

    Hey Folks, I'm new here. I hope everyone is doing well!

    I bought a well used B7800 HST. It runs and drives fine, but the lift has a problem. It's pretty much either up or down. It hasn't failed to lift anything I've hooked to it so far, but it comes up real fast. And going down is like you cut the lift loose. In between is iffy. If you play with the lift lever you can get in between somewhere but it won't stay. It leaks down pretty fast, running or not. Sometimes I can hear a hydraulic noise like a valve bypassing or something. I can move the lift lever a bit and it stops and the engine gains power. One guy told me it was probably the lift proportioning valve and they couldn't be serviced, just buy new for about $600.


    Any help is appreciated.

    Thanks!
    Raising kids is sorta like putting socks on a chicken...

  2. #2
    Silver Member
    Join Date
    May 2008
    Posts
    111
    Location
    Sergentsville, NJ (Western NJ, the good part!)
    Tractor
    2003 B7800

    Default Re: B7800 lift problem

    Are you talking about the 3 point hitch?
    If so, the rate for the 3 point can be adjusted with a knob between your legs, just below the seat. Turn it open and it will drop like a stone. Turn it almost closed and it will just trickle down. Sounds like yours is wide open. Try adjusting it one way or the other to get it where you want it.

  3. #3
    Silver Member
    Join Date
    Apr 2007
    Posts
    180
    Location
    Appalachian Ohio
    Tractor
    kubota B7800, Kubota T1570

    Default Re: B7800 lift problem

    Quote Originally Posted by Dr. Bob View Post
    Are you talking about the 3 point hitch?
    If so, the rate for the 3 point can be adjusted with a knob between your legs, just below the seat. Turn it open and it will drop like a stone. Turn it almost closed and it will just trickle down. Sounds like yours is wide open. Try adjusting it one way or the other to get it where you want it.
    Yea, what he said.
    Pat

  4. #4
    New Member
    Join Date
    Jul 2009
    Posts
    17
    Location
    GA
    Tractor
    Kubota M6800 4x4, ZD326, JD140

    Default Re: B7800 lift problem

    OK, I'll give it a try. But what about the leak down? Can these tractor lifts be serviced or repaired without buying a new assembly? On my 6800, the dealer said that same control only affects the rate of drop.

    Thanks
    Raising kids is sorta like putting socks on a chicken...

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