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hydraulic question

Post in 'The Gear' started by logjammed, Nov 15, 2013.

  1. logjammed

    logjammed Member

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    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 I would like to keep this set-up,but if piston design is outdated maybe I should punt.

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  2. salecker

    salecker Feeling the Heat

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    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

    Joined:
    Jul 24, 2008
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    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 Feeling the Heat

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    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

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    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

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    You don't get cold weather;)come up here and you will see what works in the cold.
    Thomas
    Fifelaker likes this.
  7. blades

    blades Minister of Fire

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    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 Feeling the Heat

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    I know a lot of people use ATF in splitters around here. It is a hydraulic fluid after all.

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