hydraulic question

logjammed Posted By logjammed, Nov 15, 2013 at 8:21 PM

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  1. logjammed

    logjammed
    Member 2.
    NULL
    

    Jul 24, 2008
    65
    1
    Loc:
    western ma
    I have a big old splitter that I updated to a 28gpm haldex and atf. the piston has always leaked some but has gotten worse. Soooo I pulled the piston apart and the main components look o.k.,but I have a couple concerns. the original set-up was a single stage pump w/hydraulic fluid. the piston has chevron type seals. My question is can older pistons w/chevron type seals handle 2 stage pumps and atf ?? I would like to keep this set-up,but if piston design is outdated maybe I should punt.
     
  2. salecker

    salecker
    Feeling the Heat 2.
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    Aug 22, 2010
    395
    61
    Loc:
    Northern Canada
    You could try the hydraulic oil and see if it makes any difference.
    But seeing you have it apart,why don't you see if you can get new seals at a hydraulic shop.
    I mix hydraulic oil and ATF in my loaders all the time.
    Thomas
     
  3. logjammed

    logjammed
    Member 2.
    NULL
    

    Jul 24, 2008
    65
    1
    Loc:
    western ma
    My plan was/is to re-seal the cylinder. I also have been using the splitter for 3 years since mods with atf and 2 stage pump. I guess my question would be ,did that conversion accelerate that leak ?? ,and is that old piston with chevron sealing style capable of sealing effectively for a lasting repair ?? thanks ,Chris
     
  4. Fifelaker

    Fifelaker
    Minister of Fire 2.
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    Oct 3, 2011
    516
    172
    Loc:
    NW Mi
    The cylinders are rated for X-amount of psi. Pumps are rated for X-amount of psi. If the pump and cylinder psi ratings match the cylinder doesn't know if it is a single or two stage pump.
     
  5. blades

    blades
    Minister of Fire 2.
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    Nov 23, 2008
    2,208
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    Loc:
    WI, Milw
    ATF is not always compatible with hydraulic seals. Its also not the best in cold weather. regular hydro oil of AW50 or above in cold weather or AW32-50 for warmer climates. We run Aw50-68 in the snow plows, atf freezes up when the temps get much below 20. It not the best practice to mix brands of hydro fuild either. sometimes they will not play nice together. Ya I know it works "been doing that way for years" and various other responses- so it works until it doesn't ,then the wtf moment arrives usually followed by a major pain in the wallet. Education can be quite painful and expensive at times.
     
  6. salecker

    salecker
    Feeling the Heat 2.
    NULL
    

    Aug 22, 2010
    395
    61
    Loc:
    Northern Canada
    You don't get cold weather;)come up here and you will see what works in the cold.
    Thomas
     
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  7. blades

    blades
    Minister of Fire 2.
    NULL
    

    Nov 23, 2008
    2,208
    591
    Loc:
    WI, Milw
    Ah be nice, we get the sub zero's temps just not for months on end. Being by Lake Michigan tends to moderate it some. There are other curve balls it tosses our way though.
     
  8. Fifelaker

    Fifelaker
    Minister of Fire 2.
    NULL
    

    Oct 3, 2011
    516
    172
    Loc:
    NW Mi
    I know a lot of people use ATF in splitters around here. It is a hydraulic fluid after all.
     
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