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MM1 lowering issue

Discussion in 'Fisher Engineering Discussion' started by Jonsnowdog, Jan 22, 2013.

  1. Jonsnowdog

    Jonsnowdog Junior Member
    Messages: 12

    Finally got enough snow here (long island) to push, barely enough... But now my plow keeps stopping when i lower it. It'll stop halfway down, i let go of the button and repush and it'll go a lil farther. Typically 3 pushes gets it to "float" No issues angling or raising just dropping. Anyone got ideas so i can freeze my ass off tomorrow fixing it?! Lmao thanks in advance
     
  2. Morrissey snow removal

    Morrissey snow removal PlowSite.com Addict
    Messages: 1,799

    might be the control is it a fish stick?
     
  3. kimber750

    kimber750 PlowSite Veteran
    Messages: 3,595

    Is this a new or new to you plow? You can always try adjusting the quill to see if helps correct your issue. If this is a new problem on a plow you have been using I would check valves for debris.
     
  4. Jonsnowdog

    Jonsnowdog Junior Member
    Messages: 12

    Thank you to both responses. It is a fishstick and the plow is new to me and far from new. Lol i unplugged the the stick and plugged it back in, no change doesn't seem to be it but def something to consider. I've changed the fluid once mid summer since i've had the plow/truck (1yr) but haven't had enough snow to use it much. I guess i'll be draining it and checking the filter, lines etc tomorrow. Hopefully its nothing more then sum crap. I'll let ya know tomorrow. Thanks again
     
  5. RepoMan207

    RepoMan207 PlowSite Fanatic
    from Maine
    Messages: 5,031

    It doesn't sound mechanical...more electrical. Maybe a loose ground or control connection on the S1 valve. Pull the valve cover and check to make sure the spade terminals are snug, use a pair of needle nose pliers and gently pinch them on if not. The S1 valve is the one with the white and yellow wire.

    If all checks out, move up to the grill, on the 3 pin control connector, check behind each connector and examine the yellow / white wire going into them, along with the corresponding pins / sockets in the actual connectors. clean, repair, and or replace accordingly. If there is no sign of compromised wires, corrosion, or contamination, trace the control harness into the truck making sure there isn't any pinched, or cut wires.

    Short of that, it would most likely be your controller. If you have a spare, or one you can borrow.... You can pull it apart an examine the cord, PCB, & keypad...but it may not be obvious.

    Is the float mode indicator coming on when you hold it down....regardless of actual blade movement?
     
  6. Jonsnowdog

    Jonsnowdog Junior Member
    Messages: 12

    Thanks repoman apparently you know yur stuff!!! Cleaned all plugs and the stick connection, thats when i figured out when its F---'n cold out and i have gloves on i accidently push lower and right or left. So, needless to say, i'm a lil special:dizzy:!! Lmao. Nothing wrong with anything, but thanks to you i didn't go flushing out the MM1 so thank you very much! Used the plow for hours last night with no issues at all.
     
  7. RepoMan207

    RepoMan207 PlowSite Fanatic
    from Maine
    Messages: 5,031

    Lmao! :laughing: Happy plowing! :waving: