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Fisher Motor stays running all the time

Discussion in 'Fisher Engineering Discussion' started by pmm, Apr 7, 2007.

  1. pmm

    pmm Junior Member
    Messages: 11

    Has anyone had this happen to them? I was plowing at midnight and the blade wouldn't move at all, so I wiggled the connections and the motor runs but won't shut off unless I unplug the power plug. It is a 3 plug Insta-Act unit. I just upgraded to this truck so I don't know if the previous owner did yearly service to the plow. The fluid is full and some connections are slightly corroded. My last truck was a 1995 F150 with the belt driven MM system, so I am new to the electric fishers.
     
  2. Bruce'sEx

    Bruce'sEx Senior Member
    Messages: 873

  3. itsgottobegreen

    itsgottobegreen PlowSite.com Addict
    Messages: 1,351

    It needs a new relay. Its staying stuck open when u let go of the switch.
     
  4. pmm

    pmm Junior Member
    Messages: 11

    I replaced the motor relay and it woks like a charm.
     
  5. dodgedump

    dodgedump Member
    from MASS
    Messages: 38

    Where can I get a motor realy I have an 03 dodge ram hemi... Is one supposed to be in my truck???
     
  6. Motor Relay

    You should be able to use an old style Ford starter solenoid--available at any auto parts house.


    RON​
     
  7. dodgedump

    dodgedump Member
    from MASS
    Messages: 38

    Great thanks thats what I thought I was just unsure...
     
  8. itsgottobegreen

    itsgottobegreen PlowSite.com Addict
    Messages: 1,351

    I wouldn't do that. Those are not designed to handle 200 amps repeatally. A brand new Western/fisher solenoid is $13.95 at any snow plow dealer.
     
  9. AUB1

    AUB1 Member
    Messages: 46

    I am looking for treads to do with solenoids. I have a mm2 and been having quite a time. I was plowing through the last storm and the plow just froze up....moter was working but the plow wouldn't move.....I tryed and tryed so I had to take it home. The next day I changed the fluid and it was blue and looked brand new. People are telling me to change the solenoid....what do you Guys think?