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Fisher MM1 Motor Assembly Help

Discussion in 'Truck & Equipment Repair' started by TripKore, Jan 23, 2015.

  1. TripKore

    TripKore Junior Member
    from Boston
    Messages: 25

    My plow was moving slow today. So i decided to do a fluid change and clean the filter. When i removed the motor, it came out its shaft. I am asking how do you insert the motor back into the shaft completely? There are 4 metal prongs that are in the way, they move back when pushed, but how to get them open so i can insert the motor back in?
     
  2. xgiovannix12

    xgiovannix12 PlowSite.com Addict
    Messages: 1,419

    did the internals come out of the motor? or you cant get the motor on the pump shaft ? if so spin the shaft till it drops in
     
  3. TripKore

    TripKore Junior Member
    from Boston
    Messages: 25

    How do you get the motor back in the case/shaft

    [​IMG]
     
  4. xgiovannix12

    xgiovannix12 PlowSite.com Addict
    Messages: 1,419

    ok you need to put the brushes in the holder so the copper piece (armature) drops in it will be a pain but thats the only way its going back in

    it will be easier from the top cover as well
     
  5. TripKore

    TripKore Junior Member
    from Boston
    Messages: 25

    I gathered that.... How do you get those 4 brushes? In the holder? I know they push back, but how do you get them to stay so i can drop the motor in
     
  6. xgiovannix12

    xgiovannix12 PlowSite.com Addict
    Messages: 1,419

    I normally push them in and put something like a toothpick in the spring so it holds them in the holder.

    When you drop the armature back in remove the toothpicks and reassemble the base and cover.
     
  7. TripKore

    TripKore Junior Member
    from Boston
    Messages: 25

    That seems impossible on my end, There is barely room to get my hand down in the shaft to even push back the brush... assuming i could do that and stick a toothpick... once the motor is dropped in, there is no room at all to slide anything in or out between the motor and case?
     
  8. xgiovannix12

    xgiovannix12 PlowSite.com Addict
    Messages: 1,419

    the top cover should be removable where the 2 long screws drop in Unless its a motor I never seen before.
     
  9. TripKore

    TripKore Junior Member
    from Boston
    Messages: 25

    It looked like it removes, I tried but didn't seem so, I guess I can try again if you say it does[​IMG]
     
  10. TripKore

    TripKore Junior Member
    from Boston
    Messages: 25

    Got it open, thanks for the tip!
     
  11. xgiovannix12

    xgiovannix12 PlowSite.com Addict
    Messages: 1,419

    good let me know how many curse words you learned after you finished :D
     
  12. TripKore

    TripKore Junior Member
    from Boston
    Messages: 25

    Got it in, Thanks, Toothpicks :)
     
  13. xgiovannix12

    xgiovannix12 PlowSite.com Addict
    Messages: 1,419

    glad its all together :D
     
  14. TripKore

    TripKore Junior Member
    from Boston
    Messages: 25

    Haha, That was easy... Me trying to get the pump off and on on the headgear was another story LOL, THANKS
     
  15. TripKore

    TripKore Junior Member
    from Boston
    Messages: 25

    Well, Still no go, Plow still doesn't movie in any direction :(
     
  16. xgiovannix12

    xgiovannix12 PlowSite.com Addict
    Messages: 1,419

    does the motor spin ?
     
  17. TripKore

    TripKore Junior Member
    from Boston
    Messages: 25

    Assume so, It draws power, Dash dims (it always has), And you can hear it trying to move in different directions with different sounds.

    Frozen lines?
     
  18. xgiovannix12

    xgiovannix12 PlowSite.com Addict
    Messages: 1,419

    does it raise ? it is very possible the lines froze if you did not drain em
     
  19. TripKore

    TripKore Junior Member
    from Boston
    Messages: 25

    Yeah I didn't drain them. No it doesn't move at all. Before i changed fluid it moved to the right all the way. That was it
     
  20. xgiovannix12

    xgiovannix12 PlowSite.com Addict
    Messages: 1,419

    Last edited: Jan 24, 2015