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  1. #1
    Bronze Member
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    Sep 2002
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    52

    Default Hydraulic problem?

    There is something wrong with the hydraulics on my F1900. It may or may not be related to the cold spell we went through, 5-20F during the last 10 days. It is in the 20s now but no improvement. After I start my tractor the loader and 3pt will work for about 1 minute but then it stops working. The loader and 3pt arms will go down but will not go up. It seems that the pump does not labor at all. First I thought the oil is too cold but I used to plow snow and work in the winters before. Any advise what should I look at?

  2. #2
    Elite Member
    Join Date
    Jul 2003
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    3,373
    Location
    Goffs Corner, KY
    Tractor
    IH 2444

    Default Re: Hydraulic problem?

    Possibly water in your hydraulic system and it is freezing up. That would be my first thought.

    Ben

  3. #3
    Bronze Member
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    Sep 2002
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    52

    Default Re: Hydraulic problem?

    When the same thing happened once last year I changed the oil last summer as I was suspecting the same thing. Some questions remain: did I change all the oil as I just drained it (there could have remained plenty in the cylinders), could moisture get in again, how often do I have to change the hydraulic oil, there is a lot of it in there.

  4. #4
    Super Member RickB's Avatar
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    Sep 2000
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    7,039
    Location
    Eastern NY
    Tractor
    Case 885, JD 730D, Ford 4000

    Default Re: Hydraulic problem?

    You probably have a plugged suction screen. The hydraulics working for a short time then quitting is the tip-off. Drain the oil and clean the screen which is located where the suction tube enters the rear frame; held on by 4 bolts. Do it before you trash your pump.

  5. #5
    Elite Member
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    Jul 2003
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    3,373
    Location
    Goffs Corner, KY
    Tractor
    IH 2444

    Default Re: Hydraulic problem?

    Idaho04,
    Does your tractor sit out in the rain ?

    Ben

  6. #6
    Bronze Member
    Join Date
    Sep 2002
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    52

    Default Re: Hydraulic problem?

    It could make sense what you are saying. I am not sure where I will find the screen but I'll look in the tractor book and see. My oil is both hydraulic and transmission, a lot of it, in the xmission box.

  7. #7
    Bronze Member
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    Sep 2002
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    52

    Default Re: Hydraulic problem?

    It does, it has always sit in the rain.

  8. #8

    Join Date
    Nov 2005
    Posts
    882
    Location
    Northwest CT
    Tractor
    Kubota L5030HST

    Default Re: Hydraulic problem?

    <font color="blue"> Possibly water in your hydraulic system and it is freezing up. That would be my first thought. </font>

    Idaho, this was my very first thought too. By "water in the hydraulic system", I don't mean a big puddle of pure water somewhere, like you might find in the bottom of a gas tank. I suspect that the hydraulic fluid has picked up water throughout all the fluid in the system, and I bet (my usual) $.05 that if you look at a sample of the fluid it will appear quite milky. Your same exact symptoms just happened to my log truck.

    What I suggest you do is keep the machine in a heated place until you're sure it's all thawed out. Another $.05 says all the hydraulics will then work fine. Then change the hydraulic fluid and filter(s) and you should be good to go for the winter, with just the usual "morning sickness" to contend with.

    I'll bet my last $.05 that the reason it's always been fine in previous winters is that the fluid had not yet picked up enough water to lower its gelling point.

    As another poster said, take care of it right away before you hurt your pump, they hate cavitation (and water!). Ditto the rest of a hydraulic system, water and contaminants are murder on EXPENSIVE hydraulic components. Seals, rods, pumps, motors, spool valves, everything.

    Lots of other fluids need to be changed WAY more often than they typically are. Funny how we wouldn't dream of missing an engine oil drain interval, but let some things go way over what the maintenance schedule calls for. Brake fluid (every two years at least - it REALLY absorbs water), antifreeze and gear oil come to mind. How many cars are there out there with brake fluid that hasn't been changed in 5-10 years? And think of all the poor, forgotten differentials out there, wearing out long before their time. [img]/forums/images/graemlins/frown.gif[/img]

    OK, there's my $.15 worth [img]/forums/images/graemlins/laugh.gif[/img]


  9. #9
    Elite Member
    Join Date
    Jul 2003
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    3,373
    Location
    Goffs Corner, KY
    Tractor
    IH 2444

    Default Re: Hydraulic problem?

    Drain a bit of the fluid out and see if it is milky. If so replace it. I have seen tractors that sit outside get enought water in them that the transmission freezes up and the tractor won't move.
    The tractor oil might have to be above freezing , not sure what wet hydro fluid looks like below freezing though.
    A tractor that sits outside can get water in the tranny from one of several seals leaking.
    Ben

  10. #10
    Super Member RickB's Avatar
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    Sep 2000
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    Eastern NY
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    Case 885, JD 730D, Ford 4000

    Default Re: Hydraulic problem?

    Follow the large tube back from the pump to the rear axle center section. The tube enters the screen's outer cover which is bolted and gasketed to the rear end housing. I am quite sure you will need to clean or replace the screen to get your hydraulics working properly. You will damage your pump if you run it for long like it is. A batch of oil is quite a bit cheaper than a batch of oil and a pump.

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