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Fisher MMII Sporadic Movement

Discussion in 'Fisher Engineering Discussion' started by spencer_barnes, Dec 6, 2015.

  1. spencer_barnes

    spencer_barnes Junior Member
    Messages: 9

    Hey,


    I wasn't really sure where to put this, but I figured it could be moved from here.

    Finally got to hookup to my (new to me) 9' Fisher MMII. It worked great for the first hour, then I lowered it, and couldn't get it up. I wiggled all of my connections and stuff, and could hear the solenoid clicking. Then I beat the solenoid with a screwdriver and it finally went up. I was able to get it home, and was trying to just play with it, and when I hit lower once it dropped. I'm not sure if that's a feature, or not. But then I hit raise, and it did, then felt like it was having a seizure. It just kept shaking. I shut off the controller, and unplugged all three plugs. It didn't stop shaking until I unplugged the but 2 conductor that I assume feeds power to the pump. Anyone have ANY ideas to what this could be? Maybe a new solenoid since that is what got it to lift up in the first place?

    Thanks for any help,

    Spencer
     
  2. kimber750

    kimber750 PlowSite Veteran
    Messages: 3,611

    Replace the solenoid.
     
  3. spencer_barnes

    spencer_barnes Junior Member
    Messages: 9

    Ok, any tips where to get one? It looks like they're actually pretty cheap online, but there looks to be a bunch of kinds. The one I have right now looks like this one, but online this says it's for a Western.

    [​IMG]
     
  4. kimber750

    kimber750 PlowSite Veteran
    Messages: 3,611

    I prefer OEM parts. Fisher uses a trombretta solenoid that seems to hold up pretty well.
     
  5. spencer_barnes

    spencer_barnes Junior Member
    Messages: 9

    Should I get that at the dealer, or are they going to charge a ton where I could just get one online?
     
  6. kimber750

    kimber750 PlowSite Veteran
    Messages: 3,611

    Get what you pay for. With a 9' plow I am guessing you are doing some type of commercial plowing. Why risk having plow quit over not spending $20 more for a quality part?
     
  7. dieselss

    dieselss PlowSite Fanatic
    Messages: 10,947

  8. spencer_barnes

    spencer_barnes Junior Member
    Messages: 9

  9. spencer_barnes

    spencer_barnes Junior Member
    Messages: 9

    You guys definitely think the solenoid is the reason for the sporadic pump?
     
  10. dieselss

    dieselss PlowSite Fanatic
    Messages: 10,947

    I'd be test lighting the signal first.
     
  11. spencer_barnes

    spencer_barnes Junior Member
    Messages: 9

    What do you mean?
     
  12. kimber750

    kimber750 PlowSite Veteran
    Messages: 3,611


    These two things point directly to solenoid.
     
  13. eshskis

    eshskis Senior Member
    from 4
    Messages: 138


    Yes and please don't cheap out on one this is a critical part.