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MM1 plow only raises

Discussion in 'Fisher Engineering Discussion' started by pmm, Apr 4, 2008.

  1. pmm

    pmm Junior Member
    Messages: 11

    My 3 plug insta act 8 foot MM1 only raises. The ram won't depress down to unhook and if the try to angle the blade it goes up. It will lower to the ground but no more. I will clean and grease the plug connectors for starters. Any ideas? I only remove the plow from the truck a couple times a season because it sees little road use.
     
  2. weeman97

    weeman97 Senior Member
    Messages: 376

    put it in float and push the triangle down manually thats what i do.
     
  3. Yaz

    Yaz PlowSite.com Addict
    from NH
    Messages: 1,061

    Here is you answer...Number two solenoid is not working somehow, check power to it and work backwards, if it has power you know it's the solenoid valve itself ..

    All the mechanical schematics are on the fisher engineering web page.

    fisher solinoid valves.GIF
     
    Last edited: Apr 4, 2008
  4. Yaz

    Yaz PlowSite.com Addict
    from NH
    Messages: 1,061

    Trace the light green wire, this should help you trace it.

    Good luck

    power to plow.jpg
     
  5. pmm

    pmm Junior Member
    Messages: 11

    Thanks for the info. I'll check it today.