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  1. #1
    New Member
    Join Date
    Apr 2013
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    14
    Location
    manoville,ny
    Tractor
    case 580ck

    Default Rebuilt hydraulic cylinder slight drip

    We replaced the seals on the hydraulic cylinder for the bucket...the one closest to the bucket.
    when we turn on the machine and start it and when we shut if off...it drips a few drops of fluid from where the threads are.
    but when the bucket it being operated it doesn't leak at all.
    any ideas?
    also...Is it normal for the bucket to close slower than it opens?
    We have a case 580ck b series
    Thanks

  2. #2
    Veteran Member
    Join Date
    Mar 2010
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    1,293

    Default Re: Rebuilt hydraulic cylinder slight drip

    Did you you use thread seal when putting it back together?

  3. #3
    New Member
    Join Date
    Apr 2013
    Posts
    14
    Location
    manoville,ny
    Tractor
    case 580ck

    Default Re: Rebuilt hydraulic cylinder slight drip

    NO...and thats where its leaking from...we thought originally that we didnt lube everything up enough when putting everything back together, because it only leaked for a few minutes, and then stopped...should we take apart and use a thread seal. and what kind

  4. #4
    Super Star Member J_J's Avatar
    Join Date
    Sep 2003
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    17,331
    Location
    JACKSONVILLE, FL
    Tractor
    Power-Trac 1445, KUBOTA B-9200HST

    Default Re: Rebuilt hydraulic cylinder slight drip

    Have you identified the thread yet?

    How to Identify Fluid Ports and Connectors

    Down load Thread Size and Identification PDF

    You only need to use thread sealant on NPT fittings.
    J.J.

    When I works, I works hard. When I sits and thinks, I goes to sleep.

    Git er done.

  5. #5
    Elite Member wdchyd's Avatar
    Join Date
    Apr 2010
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    2,701
    Location
    Hooksett, NH
    Tractor
    Kubota B2320

    Default Re: Rebuilt hydraulic cylinder slight drip

    Look closely at the barrel.....these barrels are made of thin steel and can develop cracks in the cyl tubing itself

    Sometimes the crack is just under the weld at the fitting

    Or maybe you just need to redo the oring/backup seals at the gland or port
    2010 Kubota B2320 FEL & BH65
    If it ain't fixed don't broke it!

    http://www.tractorbynet.com/content/...-month-wdchyd/

  6. #6
    Elite Member wdchyd's Avatar
    Join Date
    Apr 2010
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    2,701
    Location
    Hooksett, NH
    Tractor
    Kubota B2320

    Default Re: Rebuilt hydraulic cylinder slight drip

    Quote Originally Posted by Annette75 View Post
    NO...and thats where its leaking from...we thought originally that we didnt lube everything up enough when putting everything back together, because it only leaked for a few minutes, and then stopped...should we take apart and use a thread seal. and what kind
    There are no pipe threads on Case equipment.....if it's an oring leaking then only use a good #2 grease on seals

    if it's leaking at the gland oring make sure you put the backup ring on the opposite side of the pressure (common for the backup ring to twist up during installation if not enough lube on seals)
    2010 Kubota B2320 FEL & BH65
    If it ain't fixed don't broke it!

    http://www.tractorbynet.com/content/...-month-wdchyd/

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