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JW03 Backhoe no circulation of hydraulic fluid

Forum Forums Tractor Implements JW03 Backhoe no circulation of hydraulic fluid

This topic contains 6 replies, has 4 voices, and was last updated by Bob Rooks Bob Rooks 1 week, 1 day ago.

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  • #47240
    wsee
    wsee
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    Ok just replaced my hydro pump for my JW03 Backhoe still no circulation  my hydro tank is like a fishbowl no movement!!!! Dang it! Any suggestions all help is appreciated….

  • #47241

    Piper184
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    Just a few ideas of where to start.

    How is the filter in the tank?

    If you take the suction hose off at the pump will oil flow out of the hose?

    If you take the pressure hose off at the pump, will oil flow out on it’s own? How about with the engine running and the PTO engaged?

    Are you sure the tang on the pump is connecting with the slot in the tractor?

    Have you checked the shaft in the tractor to make sure it is turning with the PTO engaged and the engine running?

    Also, with the PTO engaged and the engine turned off, you should not be able to turn the end of the shaft that engages the tang on the pump. If you can, something in the tractor is broke.

    • #47245
      wsee
      wsee
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      :good:
      Piper 184 Thank you for your insight! I found the problem my tank needed cleaning it was like jelly my strainer was clogged. Thanks again

  • #47246

    DavidPrivett
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    do you have a idea what cause the oil to get like that?

  • #47247
    Bob Rooks
    Bob Rooks
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    Many people don’t know enough to change the oils and coolants that were shipped with the machines, probably thinking the correct lubricants are already installed. Well, that’s just not true at all. Change ALL lubricants and monitor the levels periodically.

    Yuchai dozer, Mustang skid steer, Mitsubishi mini-ex, Dual Dozer w/twin laser receivers, '50 Ford COE transit mixer.

  • #47248

    Piper184
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    Most definitely! I couldn’t believe what poses as fluid to the Chinese. My tractor came in the crate and following the advice of others I changed and flushed all fluids before the tractor was ever started. My goodness, what strange stuff was in the front axle. Part 80/90 gear oil, part peanut butter and part jelly! Plus I don’t think the stuff in the injector lines was even flammable!

    Another possibility is incompatibility between products, especially the factory fill stuff. If it was not all flushed out it may have reacted badly with something that we normally don’t see a problem with.

    Short side story: I use a dye when spraying weeds with Roundup. Both water soluble and the dye is made for this use. One day I was using a 2-4,D product and dumped in the dye without thinking, they are both water soluble, right? BIG mistake!! Made a jelly like crud that was nearly impossible to  clean up. Had to use carb cleaner to flush it out of the screens. Two water soluble products combined to make something that was not water soluble. Hadn’t seen that kind of thing since chemistry class in college.

    Weird stuff happens!

    Last thought, can diesel bugs live in hydraulic oil?

  • #47249
    Bob Rooks
    Bob Rooks
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    Last thought, can diesel bugs live in hydraulic oil?

    Most definitely if there is moisture present. Especially if there is a water/emulsion interface. It’s treated and dosed just like fuel  with a microbiocide. But usually hydraulic systems run at a temperature that evaporates most of the moisture. This is another reason to check hydraulic oil levels BEFORE you start the machine – to see if the level has risen.

    Yuchai dozer, Mustang skid steer, Mitsubishi mini-ex, Dual Dozer w/twin laser receivers, '50 Ford COE transit mixer.

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