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Forum topic by Jim55 posted 10-27-2021 04:00 PM 324 views 0 times favorited 24 replies Add to Favorites Watch
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Jim55

229 posts in 3351 days


10-27-2021 04:00 PM

Jim55 Jr. Here again. Need help rewiring this old 1930s 12 inch grinder. I think I know what to do but I don’t want to mess it up.

I have included some pics of how it is wired and the diagram.

I want to wire it for “high voltage” or 220.


24 replies so far

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Jim55

229 posts in 3351 days


#1 posted 10-27-2021 04:10 PM

Pic.

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Jim55

229 posts in 3351 days


#2 posted 10-27-2021 04:11 PM

Second pic

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GR8HUNTER

9133 posts in 1997 days


#3 posted 10-27-2021 04:17 PM

a brand name might help us help you :<)))))

-- Tony---- Reinholds,Pa.------ REMEMBER TO ALWAYS HAVE FUN :<))

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Jim55

229 posts in 3351 days


#4 posted 10-27-2021 04:22 PM

Sorry, it’s a Stanley 1 HP.

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TopamaxSurvivor

22817 posts in 4960 days


#5 posted 10-27-2021 05:04 PM

No pictures or diagram in the posts

-- Bob in WW ~ "some old things are lovely, warm still with life ... of the forgotten men who made them." - D.H. Lawrence

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Jim55

229 posts in 3351 days


#6 posted 10-27-2021 05:06 PM

Dang, I’ll try again . I always have problems uploading pics.

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Jim55

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#7 posted 10-27-2021 05:11 PM

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Jim55

229 posts in 3351 days


#8 posted 10-27-2021 05:27 PM

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Jim55

229 posts in 3351 days


#9 posted 10-27-2021 05:28 PM

Ha victory is mine!!!

I think. Can y’all see these pics?

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splintergroup

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#10 posted 10-27-2021 06:11 PM

Hey, pictures!

You really need to blow off those wires since the colors all look the same (you might remove the color if you try water or solvents, that’s why I mentioned air)

Given that the “hot” wire (black) is connected to two motor wires (incoming from an assumed switch on the left), it appears that it is currently wired for “low” (110v).
The motor wires in your hand appears to then be the white/red/yellow.

Assume nothing until you can verify the colors!

EDIT:
You’ll need to remove the white motor wire from the bundle in your hand, remove the green motor wire from the other black wire nut at the top of the picture (and join it with the white removed above)

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Jim55

229 posts in 3351 days


#11 posted 10-27-2021 06:20 PM

It’s 2 yellows and a red tied to the incoming white.
2 greens and a black tied to the switch.
And the incoming black tied to the opposite side of the switch.

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splintergroup

6026 posts in 2507 days


#12 posted 10-27-2021 06:27 PM



It s 2 yellows and a red tied to the incoming white.
2 greens and a black tied to the switch.
And the incoming black tied to the opposite side of the switch.

- Jim55

One of those yellows is just a short jumper (connected to the white wire with the orange wire nut). The red/yellow are running into the motor)

The “two greens” are probably green/blue).

Definitely need to do some cleaning 8^)

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Jim55

229 posts in 3351 days


#13 posted 10-27-2021 07:07 PM

I have done some cleaning.

It is not very clear in the pic but there are in fact 2 yellow wires and 1 red coming out of the motor which are then tied to the jumper which is tied to the white.

On the other side it is a green and a blue which are tied to a black which is attached to the switch.

There is also a black wire that comes out of the motor which is attached to the capacitor.

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TopamaxSurvivor

22817 posts in 4960 days


#14 posted 10-27-2021 07:30 PM

The bottom line is you need to series the motor windings to go to high voltage.


It s 2 yellows and a red tied to the incoming white.
2 greens and a black tied to the switch.
And the incoming black tied to the opposite side of the switch.

- Jim55


If you can figure out which of the “2 yellows” is the white it will be easy to do. You could take it to a motor shop. They should be able to figure out which is which. Trial and error might damage the motor.

-- Bob in WW ~ "some old things are lovely, warm still with life ... of the forgotten men who made them." - D.H. Lawrence

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Jim55

229 posts in 3351 days


#15 posted 10-27-2021 07:34 PM

Might wind up doing that. This grinder is pretty irreplaceable for me.

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