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  1. #1
    New Member
    Join Date
    Jun 2012
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    8
    Location
    hohenwald tn
    Tractor
    international 684

    Default International 684 hyraulics quit working when hot

    I have a 1980 International tractor. When the tractor gets hot the hydraulics quit working. They will start out by getting slow and jerky and then quit. The power steering goes out also. When you let it cool for a while it works fine again for about a hour and then the same thing. We had a guy put a new pump on and new hytran oil and it still does the same thing. We noticed today aa the temperature gets cooler later in the day the hydraulics work better but not great. I know a guy that runs 30sae motor oil in his hydraulics because the other oil gets to thin and doesn't work. Any opinions or advice would be greatly appreciated

  2. #2
    Veteran Member
    Join Date
    Sep 2007
    Posts
    2,359
    Location
    Doniphan, Mo.
    Tractor
    Kubota L4240, B7800 & BX2660

    Default Re: International 684 hyraulics quit working when hot

    Sounds like the screen in the trans is stopped up. If you didn't change the filter it could be that also or both.

  3. #3
    New Member
    Join Date
    Jun 2012
    Posts
    8
    Location
    hohenwald tn
    Tractor
    international 684

    Default Re: International 684 hyraulics quit working when hot

    We changed the filter and cleaned the screen

  4. #4
    Platinum Member
    Join Date
    Apr 2011
    Posts
    739
    Tractor
    cx70,5510,4630,5005

    Default Re: International 684 hyraulics quit working when hot

    sounds like the relief valve is sticking.

  5. #5
    New Member
    Join Date
    Jun 2012
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    8
    Location
    hohenwald tn
    Tractor
    international 684

    Default Re: International 684 hyraulics quit working when hot

    Where is the release valve and what does it look like

  6. #6
    Platinum Member
    Join Date
    Apr 2011
    Posts
    739
    Tractor
    cx70,5510,4630,5005

    Default Re: International 684 hyraulics quit working when hot

    bottom of the mcv valve.there is also a flow divider valve there also that could be bad.you might clean it .

  7. #7
    New Member
    Join Date
    Jun 2012
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    8
    Location
    hohenwald tn
    Tractor
    international 684

    Default Re: International 684 hyraulics quit working when hot

    Would that only happen when it's hot?

  8. #8
    New Member
    Join Date
    Jun 2012
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    8
    Location
    hohenwald tn
    Tractor
    international 684

    Default Re: International 684 hyraulics quit working when hot

    What does the pressure relief valve look like. I can't find it or the flow divider. Im not real smart when it comes to this stuff

  9. #9
    Platinum Member
    Join Date
    Apr 2011
    Posts
    739
    Tractor
    cx70,5510,4630,5005

    Default Re: International 684 hyraulics quit working when hot

    i would recommend you go over to lawrenceburg to the caseih dealership.get them to copy a breakdown of the valves.i would take them both out and look for damage or trash.sometimes it is obvious sometimes not.i would lean toward the relief valve for replacement.

  10. #10
    New Member
    Join Date
    Jun 2012
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    8
    Location
    hohenwald tn
    Tractor
    international 684

    Default Re: International 684 hyraulics quit working when hot

    Ok will do. Thanks a lot

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