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  1. #1
    New Member
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    Jan 2004
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    15

    Default Hydraulic oil and filter change, no lift,air in oil

    My 2500 Yanmar became very slow lifting a 4.5 ' disc. Decided to check filter screen. Oil came out very dark amd filled with metal particles. Screen was not as clogged as I have seen, but, pretty bad. Drained all oil and removed and cleaned screen. Replaced oil with same volume as I removed (+-) used universal fluid from TSC. 3 point will not raise nor will loader, oil on dipstick shows air bubbles. I closed all cylinders on loader but now I don't remember if I lowered the 3 pt. Anyway any input is needed and appreciated. Thanks. Dan

  2. #2
    Super Member Inspector507's Avatar
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    Mar 2002
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    5,817
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    Central Ohio

    Default Re: Hydraulic oil and filter change, no lift,air in oil

    Dan,
    It takes a few cycles of all the cylinders to get rid of the air that may have been introduced.


  3. #3
    Elite Member
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    Nov 2005
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    2,948

    Default Re: Hydraulic oil and filter change, no lift,air in oil

    I'd guess you're sucking the air in - somewhere.
    Without knowing your particular tractor, if it has a spin on filter that is "sucked through" I'd DOUBLE check that the old gasket came away with the old filter.

  4. #4
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    Default Re: Hydraulic oil and filter change, no lift,air in oil

    Quote Originally Posted by Inspector507
    Dan,
    It takes a few cycles of all the cylinders to get rid of the air that may have been introduced.
    How do I get the cylinders to cycle when nothing happens when I attempt to raise 3ph or loader? Dan

  5. #5
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    Default Re: Hydraulic oil and filter change, no lift,air in oil

    Quote Originally Posted by Reg
    I'd guess you're sucking the air in - somewhere.
    Without knowing your particular tractor, if it has a spin on filter that is "sucked through" I'd DOUBLE check that the old gasket came away with the old filter.
    Tractor has a metal screen that is cleaned and replaced. kinda wish I had a spin-on. Thanks for your reply. Dan

  6. #6
    Super Member kenmac's Avatar
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    Feb 2005
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    5,850
    Location
    The Heart of Dixie
    Tractor
    yanmar 3110D

    Default Re: Hydraulic oil and filter change, no lift,air in oil

    You may have to check the punp. I've changed my fluid several times & had no air problems to deal with

  7. #7
    Super Member Gary Fowler's Avatar
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    Jun 2008
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    7,912
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    Bismarck Arkansas
    Tractor
    2009 Kubota RTV 900, 2009 Kubota B26 TLB & 2010 model LS P7010

    Default Re: Hydraulic oil and filter change, no lift,air in oil

    You definitely have a problem. There should not be any metal particles in the hydraulic oil. THose particles have been worn off off something, likely the hydraulic pump.

  8. #8
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    Default Re: Hydraulic oil and filter change, no lift,air in oil

    Turned out to be the shear key on hydraulic pump (.83) With new gasket about 3-4$ total. Plus, I got to practice getting up and down on my creeper(:. Thanks for the help guys. Dan

  9. #9
    Super Member Inspector507's Avatar
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    Mar 2002
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    5,817
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    Central Ohio

    Default Re: Hydraulic oil and filter change, no lift,air in oil

    Glad you got it fixed.


  10. #10
    Silver Member Onthesauk's Avatar
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    Jun 2005
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    177
    Location
    NW Washington
    Tractor
    Ford 3000

    Default Re: Hydraulic oil and filter change, no lift,air in oil

    Good for you! Always nice to hear when it turns out to be $3 or $4 rather then $1,000.
    Ford 3000

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