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Thread: Grizzly G0779 Gearhead drill press rewiring

  1. #1
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    Grizzly G0779 Gearhead drill press rewiring

    I have this new gearhead drill press at work. It works fine but the way the barrel switch is wired seems backwards to me.

    Is there an easy way to reverse the wiring?

    Trying to change the wires on the barrel switch seems a bit harder than changing the wires at the motor.

    Can I just move the V1,V2, U1,U2 wires in the box near the motor to change the direction?

    If so, any suggestions?









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  2. #2
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    Re: Grizzly G0779 Gearhead drill press rewiring

    If it's 3 phase just switch two wires at the breaker panel unless there's other motors on the same circuit then don't as they'll then run backward. Better get someone qualified to do it at the drill so the smoke don't leak out.
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  3. #3
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    Re: Grizzly G0779 Gearhead drill press rewiring

    It is single phase 220

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  4. #4
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    Re: Grizzly G0779 Gearhead drill press rewiring

    did you check in both high and low gear? some machines spin in reverse in one of the speeds.
    but yes,you should be able to do it the motor.
    Last edited by filetobeef; 06-24-2020 at 08:49 PM.

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  6. #5
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    Re: Grizzly G0779 Gearhead drill press rewiring

    Is there a manual available for it? I have seen quite a few grizzly manuals and they are great when it comes to schematics...

    ***DANGER***This is just a guess!!! so don't do it unless you check the switch with an ohm meter FIRST to confirm operation of the poles!!!!! My guess is switch the U's 1 with 2 , 2 with 1 and the V's same thing....

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  8. #6
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    Re: Grizzly G0779 Gearhead drill press rewiring

    I felt it was backwards as well.

    But i just got used to it. It’s muscle memory now.
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  10. #7
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    Re: Grizzly G0779 Gearhead drill press rewiring

    Quote Originally Posted by BrooklynBravest View Post
    I felt it was backwards as well.

    But i just got used to it. It’s muscle memory now.
    Yesterday I used it for a couple of hours turning it on and off repeatedly as I was milling the discs, so it pretty much became muscle memory. I saw you had the same thoughts initially in your thread on the switch but was not sure if you had tried to change anything.
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  11. #8
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    Re: Grizzly G0779 Gearhead drill press rewiring

    Flip the switch handle over if it will and almost accomplished the same thing unless it is keyed to that position which it may be.

    I guess though it isn't even the markings you want fixed but rather clockwise on switch equals clockwise on the quill.


    Did it come with a schematic. Check out what the drum switch is doing thoroughly first. Sure don't wanna fry something.
    Last edited by danielplace; 06-25-2020 at 12:01 PM.

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