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  1. #1
    New Member
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    Nov 2010
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    2
    Tractor
    L785

    Default how to drain hydraulic fluid in new holland skid steer L785

    Hey all, forgive me I am new.
    Does anyone know how to remove the hydraulic fluid from a New Holland L785 skid steer. It seems to have water in it but cannot find any way to drain it.
    THank you in advance...

  2. #2
    Super Star Member J_J's Avatar
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    Sep 2003
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    17,119
    Location
    JACKSONVILLE, FL
    Tractor
    Power-Trac 1445, KUBOTA B-9200HST

    Default Re: how to drain hydraulic fluid in new holland skid steer L785

    Does your hyd tank not have a drain? If not, then you could suck it out with a oil pump. If possible, find the lowest point for a hyd fitting, and open it and let the fluid drain, then flush with some new fluid. If you drain the hydrostatic pump, there are procedures to prime it. You might even be able to catch all of the expended old fluid from the cyl and hyd motors before it gets to the tank. Once the pump is primed, the other components will self purge. If it is up on jacks, just run it slow and operate all the cylinders.

    If possible, get a manual or talk to a hyd tech at the dealership.

    Try and find out where the water is getting into the hydraulic system.

    If left outside, throw a tarp over it.
    J.J.

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

    Git er done.

  3. #3
    Super Star Member J_J's Avatar
    Join Date
    Sep 2003
    Posts
    17,119
    Location
    JACKSONVILLE, FL
    Tractor
    Power-Trac 1445, KUBOTA B-9200HST

    Default Re: how to drain hydraulic fluid in new holland skid steer L785

    Just some more data to read. Not necessarily your pump. Just procedures.

    Series 40 -Sundstrand Sauer Hydrostatic Transmission Start-Up & Maintenance
    J.J.

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

    Git er done.

  4. #4
    Gold Member
    Join Date
    Aug 2010
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    332

    Default

    The chain cases are the reservoir. When it was new, there were plugs on the bottom, both sides. If they are worn off, the side covers can be removed- a real mess to do. Then use a suction gun to get out the last bit of oil.

    Seal up the cover plates on top of the chain cases, that's probably how water got in.

  5. #5
    New Member
    Join Date
    Nov 2010
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    2
    Tractor
    L785

    Default Re: how to drain hydraulic fluid in new holland skid steer L785

    Thank you all so much. No drain so I sucked out as much as I could then removed the chain cover. You nailed it, odd set up but was able to remove all but what was in the lines. Do you know how to bleed the system. Don't want to burn up the pump. I have put in 25 gal but not sure if its full. My book says it holds 88 liters.
    Thanks again you all rock.

  6. #6
    Gold Member
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    Aug 2010
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    Default

    With the oil topped off, start the engine. The pumps should prime themselves.

  7. #7
    New Member
    Join Date
    Mar 2014
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    1
    Location
    clark new jersey
    Tractor
    new holland 785

    Default Re: how to drain hydraulic fluid in new holland skid steer L785

    how to bypass the seat and seat belt safety on a 785 skid steer

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