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Unimount Won't Angle

Discussion in 'Western Plows Discussion' started by graycenphil, Dec 21, 2009.

  1. graycenphil

    graycenphil Member
    Messages: 82

    Started plowing last night and everything was fine. After a while, it wouldn't angle full right; stopped about at straight. It would angle left and return to straight. By the end of the night, it wouldn't angle either way. It's trying to - the motor runs (lights dim) and it bumps an inch like it wants to go but then stops.

    I also thought the lights might have been dimming a little more than usual - like it was drawing a lot of current, even when raising the plow. But I might just be imagining that too.

    Any ideas what's wrong?

    Thanks.
     
  2. twinman326

    twinman326 PlowSite.com Addict
    Messages: 1,683

    Have you check the fluid??

    The pump screen might be clog??
     
  3. graycenphil

    graycenphil Member
    Messages: 82

    Fluid's good. Will check the screen. Thanks.
     
  4. B&B

    B&B PlowSite Fanatic
    Messages: 12,777

    Sticking poppet valve (very likely) or debris in the S2 valve. Need to pull the poppet out and go over it..or simply replace it.
     
  5. graycenphil

    graycenphil Member
    Messages: 82

    Screen seems okay, I put in new fluid just in case. I guess I'll check the valves next. Thanks again.
     
  6. twinman326

    twinman326 PlowSite.com Addict
    Messages: 1,683

    Have you check to see if you have power going to the S valve??
     
  7. graycenphil

    graycenphil Member
    Messages: 82

    I haven't, but assume I do because the plow moves a bit when I try to angle left or right.
     
  8. graycenphil

    graycenphil Member
    Messages: 82

    With both the hoses disconnected, the plow is really hard to angle by hand. It should move pretty easily, shouldn't it?
     
  9. twinman326

    twinman326 PlowSite.com Addict
    Messages: 1,683

    If your using a hydraulic jack underneath the plow, you should be able to move the plow (by hand)left and right to get the old fluid out of the lines pretty easy. Not frozen??
     
  10. graycenphil

    graycenphil Member
    Messages: 82

    I raised the plow (it raises and lowers fine), shut the truck off, then removed the left and right hoses. I tried to move it back and forth, and it was really hard to move. Should it have been easy? Does this mean a problem with the cylinder?

    Thanks again.
     
  11. B&B

    B&B PlowSite Fanatic
    Messages: 12,777

    If you can angle it by hand AT ALL then there's nothing mechanical causing th issue.
     
  12. twinman326

    twinman326 PlowSite.com Addict
    Messages: 1,683

    If your having a hard time moving the plow left or right, u might have a problem with cylinder.
     
  13. graycenphil

    graycenphil Member
    Messages: 82

    I can move it, but pretty much have to slam it a bunch of times to go from straight to angled. Is there a way to test the cylinder?
     
  14. twinman326

    twinman326 PlowSite.com Addict
    Messages: 1,683