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problem with western unimount

Discussion in 'Western Plows Discussion' started by jasonz, Nov 10, 2010.

  1. jasonz

    jasonz Senior Member
    Messages: 250

    So just a quick history, I bought my truck and it had a western unimount frame. I found an 8' plow that some guy was selling and I bought it. The only thing was I didnt have a controller so I took his word that everything worked but made the mistake of not testing it. Anyway I got a controller the other day and Im having some problems with the plow.

    The pump sounds like its trying to work but wont lift the plow or even just the bar if I take the chain off. As far as left or right it does jerk an inch or two to the right but not much more than that, I think partly because the plow is on the ground. Its got fluid so I dont know where to start checking.
     
    Last edited: Nov 10, 2010
  2. B&B

    B&B PlowSite Fanatic
    Messages: 12,777

    It's running the motor but not opening any of the valves when any function is pressed, either a bad controller or missing coil ground wire (black/orange) on the coils. Time to start checking under the valve cover on the pump. :waving:
     
  3. jasonz

    jasonz Senior Member
    Messages: 250

    ok, is there anyway to check the controller?
     
  4. B&B

    B&B PlowSite Fanatic
    Messages: 12,777

    Not directly (easily). Instead, use the coils checking the correct one for magnetism when a specific function is pressed on the controller. Just need a helper and something metal (screwdriver for example)...oh and the manual helps too so here it is in it's entirety also. Unimount manual
     
  5. jasonz

    jasonz Senior Member
    Messages: 250

    ok so after reading the manual I've narrowed it down to a bad #3 valve, I think. According to the manual #3 is responsible for raising and angling left, both functions are not working. I can go right and down.

    Where do I go from here?
     
  6. B&B

    B&B PlowSite Fanatic
    Messages: 12,777

    Which method did you use to determine it's the S3 Jayson? The mag test?
     
  7. jasonz

    jasonz Senior Member
    Messages: 250

    first a check light to make sure the controller was sending the signal, then the mag test to make sure the coil was working then I used the chart in the manual and the trouble shooting chart based on the symptoms. So based on that I assumed that the valve was stuck closed. And also when I pushed the controller to the left the plow went right, which makes sense since both 2 and 3 would need to be open but if only 2 was open the plow went right.

    plow6.jpg
     
    Last edited: Nov 11, 2010
  8. B&B

    B&B PlowSite Fanatic
    Messages: 12,777

    Well done. :nod:

    Likely the valve itself is the culprit then. Simple enough to remove it for a look see. May just be stuck...but usually when they stick once they're unreliable from there on out so a replacement is wise.
     
  9. jasonz

    jasonz Senior Member
    Messages: 250

    also

    Also based on this

    plow3.jpg
     
  10. jasonz

    jasonz Senior Member
    Messages: 250

    Yeah once I saw that chart it all clicked, it took a while to get to that point, but man that manual is awesome, Im gonna print it out and put it in a binder.

    My dealer should have that valve or be able to get it right?
     
  11. B&B

    B&B PlowSite Fanatic
    Messages: 12,777

    If he's worth his weight in plow parts he should. :D
     
  12. jasonz

    jasonz Senior Member
    Messages: 250

    any idea what that will run me?
     
  13. B&B

    B&B PlowSite Fanatic
    Messages: 12,777

    Should be $70 or so.
     
  14. firefighter1406

    firefighter1406 Senior Member
    Messages: 328

    B&B saved another day. B&B helped me a bunch last year with my Meyer, glad to know he works with Westerns too since I have switched plows. Keep his cantact info handy, he is a great help.
     
  15. jasonz

    jasonz Senior Member
    Messages: 250

    Absolutely this has been driving me nuts for four days. I can sleep well tonight
     
  16. Jim@esitrucks

    Jim@esitrucks Inactive
    Messages: 1,124

    B&B is the man for sure!
     
  17. jasonz

    jasonz Senior Member
    Messages: 250

    changed the valve, fluid and filter and gasket. Works great now. Thanks for the help
     
  18. jasonz

    jasonz Senior Member
    Messages: 250

    one thing Ive noticed is it drops really fast when you put it down, my MM on my old truck went down softer. Is that normal? My friends 7'6" unimount also drops softer/slower I know this is an 8 foot but it just seems fast to me almost violent lol.
     
  19. B&B

    B&B PlowSite Fanatic
    Messages: 12,777

    Turn the drop speed screw down to your liking then. It's on the valve block, should be shown in the manual.
     
  20. jasonz

    jasonz Senior Member
    Messages: 250

    i looked didnt see anything by that name is it the pump relief valve screw? or I read something about the quill ?