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Ultramount leakdown

Discussion in 'Western Plows Discussion' started by FourDiamond, Mar 28, 2016.

  1. FourDiamond

    FourDiamond Senior Member
    Messages: 129

    Purchased a used Ultramount Vplow during the season, and it had a leakdown issue. After about 30 minutes of sitting, it would leak all the way down, so not a huge problem, but annoying never the less. Since it looks like the season is over, I replaced the S3 valve and the coil, but still have the same problem. Anyone have any other ideas of what it could be?? Not a big fan of putting a piece of equipment away that's broken, so I would like to resolve it this week
     
  2. 1olddogtwo

    1olddogtwo PlowSite Fanatic
    Messages: 11,501

    Internal leak in the ram possible, is the packing nut bone dry on the outside?
     
  3. FourDiamond

    FourDiamond Senior Member
    Messages: 129

    Packing nut is dry. Is there a way to test the ram without replacing it?
     
  4. nealybird

    nealybird Senior Member
    Messages: 713

    that's a single acting cylinder, so the cylinder can't be the problem if it's not leaking all the fluid out. It has to be leaking past a valve back to tank.
    .. and you're right, the S3 would be the likely culprit.
     
  5. FourDiamond

    FourDiamond Senior Member
    Messages: 129

    We replaced the S3 valve with no change in the problem. According to the hydraulic flow chart , S2 has to open to allow fluid to enter the lift cylinder. So the only thing left is the fluid is leaking back through the check ball on the S2 valve. Planning on changing it the week after the weather breaks. Thanks for the reply.
     
  6. nealybird

    nealybird Senior Member
    Messages: 713

    Cool manz. good luck.
     
  7. FourDiamond

    FourDiamond Senior Member
    Messages: 129

    We replaced the S2 valve and after 4 hours it seems to be holding. So it looks like its fixed. The funny (or sad depending on your view) is that the troubleshooting guide from Western doesn't even list the S2 valve as a source of a leakdown problem.