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  1. #1
    New Member
    Join Date
    Apr 2013
    Posts
    1
    Location
    princeton,texas
    Tractor
    1989 ford 1720

    Default 3-point is jumping up and down

    my ford tractor 3-point just keeps hoping up and down by itself. what can be wrong with? i just filled with oil and it keeps doing that. i can't find any oil leaks on the ground or anything.

  2. #2
    Elite Member
    Join Date
    May 2012
    Posts
    2,972
    Location
    Knoxville, TN
    Tractor
    Bobcat CT225

    Default

    Is it maybe leaking down and then being pushed back up by the hydraulics? If you turn off the tractor, does the three point stay up?

  3. #3
    Veteran Member
    Join Date
    Jun 2009
    Posts
    1,565
    Location
    Douglas County, Oregon
    Tractor
    09' Kubota b3200HST

    Default Re: 3-point is jumping up and down

    How low was it? You may have air in the system. Hopefully cycling the three point several times should correct the problem.

  4. #4
    New Member
    Join Date
    Apr 2013
    Posts
    11
    Location
    Royse City, Texas
    Tractor
    Ford 1100

    Default Re: 3-point is jumping up and down

    Bad parachute seal in the lift. Easy to fix. Get the new seal at NH-Ford and be sure to hone the cylinder while you have it open.

  5. #5
    New Member
    Join Date
    Apr 2013
    Posts
    2
    Location
    Texas
    Tractor
    Long

    Default Re: 3-point is jumping up and down

    Long 2460, about 68 model, strong diesel engine ... rear hydraulics will not go up or down, any movement VERY slow and jumpy.. front bucket worked slow, recent Hy. oil and filter change.. found external hydraulic pump, removed and cleaned, put in all new oil again.. front bucket working fine now but no improvement to rear.. Is there a internal pump ?, screen? or ?.. and if so.. location? how to get to it replace or clean it too ?.. have old owners manual but nothing saying where another hydraulic pump or filter might be located.. Appreciate any help.. Thanks

  6. #6
    New Member
    Join Date
    Apr 2013
    Posts
    11
    Location
    Royse City, Texas
    Tractor
    Ford 1100

    Default Re: 3-point is jumping up and down

    -0417121752-00-jpg-0417121753-00-jpgNo internal pump I know of. Here's the deal: Its probably a bad seal on the lift cylinder, but could also be the pressure relief valve or the lever sensor valves. Was your old fluid black?

  7. #7
    New Member
    Join Date
    Apr 2013
    Posts
    2
    Location
    Texas
    Tractor
    Long

    Default Re: 3-point is jumping up and down

    no old oil was ''greyish'' but is like that every time we check it or change it.. tractor is barn kept so not out in the weather..
    Will check cylinder lift as have not done that.. Where would we find pressure relief valve or the other valve.. have good mechanic but with little "Long knowledge''... Thanks !!

  8. #8
    New Member
    Join Date
    Apr 2013
    Posts
    11
    Location
    Royse City, Texas
    Tractor
    Ford 1100

    Default Re: 3-point is jumping up and down

    The pictures show a Ford, but I imagine a Long of that vintage would apply the KISS logic and locate it right near where the position control lever is and where the high line enters the contol valve. On Fords its on the right-hand side of the cylinder. Usually, 6-10 bolts will get you a look-see at the cylinder and seal.

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