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  1. #1

    Default kubota 3ph problems

    My b1750 is having problems recently . When the lift arms are under load ,they jerk up and down.It seems to be in the hydrolics somewhere , thre is also a clicking noise associated with the movement. Any info or advice would be appreciated.

  2. #2
    Super Star Member RoyJackson's Avatar
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    Bethel, Vermont
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    John Deere 4400 MFWD, Deere 855D UTV, Z920A Zero Turn Mower and assorted implements

    Default Re: kubota 3ph problems

    We had another thread on a very similar problem (as you describe it)...it was on a Deere though...4300, I think.
    If I recall, the problem was a bad check valve. When they go bad, check valves sometimes "flutter", allowing that "jerky" movement.

    That's a guess, friend..but I'll wager that's the problem.

  3. #3
    Elite Member
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    Jul 2003
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    Goffs Corner, KY
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    IH 2444

    Default Re: kubota 3ph problems

    Make sure the arms aren't binding anywhere. This could be a hydraulic problem or a mechanical problem.

  4. #4

    Join Date
    Sep 2001
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    424
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    Upstate NY
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    Kubota B7100DT

    Default Re: kubota 3ph problems

    I have heard this described as a 3 pt hiccup, and it is somewhat common, especially among older tractors like the 8n etc. Do a search on this forum, if that doesnt work check out ytmag.com and look there. Somewhere recently I read the fix for this - and it wasnt a real big deal. It may simply be air in your hydraulic system

  5. #5
    Epic Contributor Soundguy's Avatar
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    Default Re: kubota 3ph problems

    Have you just recently changed the oil in the system, or is the oil level real low?

    Sounds like could be air in the system.. but this should cycle out real fast unless it is being constantly introduced . Might be an air leak on the suction line comming from the sump... if so, this isn't real good for the pump...

    Soundguy

  6. #6
    Elite Member rockyridgefarm's Avatar
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    Deere 4310 HST MFWD

    Default Re: kubota 3ph problems

    W[img]/forums/images/graemlins/cool.gif[/img]W!! Are You really JBL??

  7. #7

    Default Re: kubota 3ph problems

    after reading some back posts on 3ph problems with "jerking" or Fluttering of the lit arms , it sounds to me that the problem is in the check valve in the 3ph assembly. either a piece of dirt or debris is stuck in there or the valve is just bad.If I remember , I had just done some heavy duty ( for my small tractor) grading with a land plane that I welded together and attached to the loader. Maybe this was put too much strain on the hyrdolics, and blew the check valve. BTW, does any one know where the vavle is located on a B1750?

  8. #8
    Platinum Member
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    Winchester, New Hampshire
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    Kubota L3000

    Default Re: kubota 3ph problems

    I did have that problem with my kubota when there was less than 40 hours on it.
    Turns out there was a piece of "forgien material" in the pressure relief valve. I
    would almost bet you have the same situation. The dealer fixed it in one day.

    Good luck
    Randy

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