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Wire a mag drill motor

Discussion in 'General Electronics Discussion' started by bear dean, Aug 20, 2018.

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  1. bear dean

    bear dean

    Aug 20, 2018
    I have a new Milwaukee mag drill motor , 4253-1 - 120 volts , it has four leads one black, red white and green , my drill only has three leads , black white and green , I tried to wire it up and drop the red out, will not run , Im not worried about rev , just forward , can you help me, please
    Last edited by a moderator: Aug 21, 2018


    May 20, 2017
    Why don't you ask the manufacturer / supplier what to do with it?
  3. bear dean

    bear dean

    Aug 20, 2018
    I ordered the drill motor on line , I call the tech support line for Milwaukee and waited for 30 mins , I ask him for help and he said hold on for a min , never cam back at all .
  4. dave9


    Mar 5, 2017
    The owners manual states you can call 1-800-SAWDUST
    No, I'm not kidding...
  5. Minder


    Apr 24, 2015
    The mag drill is a Universal motor, the motor would normally have two leads. or possibly four if it is normally reversible.
    Identify the commutator and the fields they should all be wired in series, if no need for reverse then they can be left permanently connected in series.
    ratstar likes this.
  6. bear dean

    bear dean

    Aug 20, 2018
    thanks , I will try this
  7. 73's de Edd

    73's de Edd

    Aug 21, 2015
    Sir bear dean . . . . .

    Herewith, is all of your relevant info . . .with it being condensed into one page . . .with my additional inserts.
    This is what Milwaukee says should be the wiring codes, excepting your found BLUE versus GREEN discrepancy.

    Wonder if you might have actually got yourself an e-bay MILSQUAWKEE . . .Chinese clone.

    Ask for my further help if you can't relate to the one odd color coded wire, as to whether it is being an armature or field connection.

    On my BIG Milwaukee's my power cord plug into the drills are like the YELLOW fig one illustration, but with only 3 leads.
    On yours, as it is shown, its supposed to be a 4 pin connector that plugs into the mag control panel , where the drill power switch is also located, along with the control of the electromagnetics aspect of the unit..

    HOWTODOITTOIT . . . . .


    73's de Edd
    Richard9025 and darren adcock like this.
  8. bear dean

    bear dean

    Aug 20, 2018
    that was the answer , works great , THANKS TO YOU SIR AND ALL THAT HAVE HELPED, VERY NICE OF YOU AND THIS SYSTEM , thanks again
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