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Power Kraft 3/4 HP wiring diagram needed

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Forum topic by yekrats posted 02-02-2016 11:59 PM 629 views 0 times favorited 15 replies Add to Favorites Watch
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yekrats

9 posts in 311 days


02-02-2016 11:59 PM

Topic tags/keywords: tablesaw

Hi, newbie here. I admittedly screwed up. Cleaned sawdust out of old power kraft TS motor and didn’t write wiring connections down. It was cold and they were numbered 1-9 so I thought, meh, I don’t need to. Well, the 2 loose wires are labeled A & B instead of numbered and I don’t know where to put them. I should have known better. Can anyone tell me how to hook it back up?


15 replies so far

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ohtimberwolf

635 posts in 1819 days


#1 posted 02-04-2016 02:10 AM

If there are only two posts left it looks like you could tell by the length of the wires which went where. Best to wait for more replies rather than take a chance though. Be sure to label them once you find out. Is there a model # or name on the motor? larry

-- Just a barn cat, now gone to cat heaven.

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rick1955

258 posts in 898 days


#2 posted 02-04-2016 05:32 AM

http://www.toolkraft.com
Go here.

-- Working smarter with less tools is a true crafts person...

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yekrats

9 posts in 311 days


#3 posted 02-04-2016 10:01 AM



If there are only two posts left it looks like you could tell by the length of the wires which went where. Best to wait for more replies rather than take a chance though. Be sure to label them once you find out. Is there a model # or name on the motor? larry

- ohtimberwolf

Sorry, I was in a hurry when posting. Unfortunately, one of the wires doubles up with another on a post so I can’t be sure where it goes. I could guess but I’m afraid I’d smoke the motor. I kick myself for not taking a picture.
It says only Powr-Kraft on the motor. Model #84DP4550 3/4A (not sure if 3/4A is part of serial number)
It’s a 3/4 HP, dual voltage (115/230 volt) reversible motor.
MFG. # A7310
For what it’s worth, I think it was made in 1949 by ToolKraft

Thank you for your help

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yekrats

9 posts in 311 days


#4 posted 02-04-2016 08:29 PM



Hi, newbie here. I admittedly screwed up. Cleaned sawdust out of old power kraft TS motor and didn t write wiring connections down. It was cold and they were numbered 1-9 so I thought, meh, I don t need to. Well, the 2 loose wires are labeled A & B instead of numbered and I don t know where to put them. I should have known better. Can anyone tell me how to hook it back up?

Here’s some pics and info.

It’s a Powr-Kraft (Montgomery Ward) table saw motor. No other ID
3/4 HP reversible motor
Dual voltage 115/230 volt
1725 RPM
Serial A-48
MFG #A7310
Model #84DP4550 3/4A (not sure 3/4A part of serial number)

The loose wires (seen in pic 2) are A&B. One doubles up with post 1 or 2 I think. (wires on posts 1, 2, 3) are hooked up correctly. Also, can’t remember which posts the A/C hooks up to anymore. Big surprise there. Posts 2 & 3 maybe?

- yekrats


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rick1955

258 posts in 898 days


#5 posted 02-04-2016 10:05 PM

I gave you the link to Toolkraft. They are only there wed and thu 9-430. They made your saw. Factory closed in 1984 but they still offer support. I just talked to them.

-- Working smarter with less tools is a true crafts person...

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ohtimberwolf

635 posts in 1819 days


#6 posted 02-04-2016 10:22 PM

Wow…closed in 1984 and still offer service. What happened to today?

-- Just a barn cat, now gone to cat heaven.

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yekrats

9 posts in 311 days


#7 posted 02-04-2016 11:44 PM



I gave you the link to Toolkraft. They are only there wed and thu 9-430. They made your saw. Factory closed in 1984 but they still offer support. I just talked to them.

- rick1955


Yes, thank you. Was just trying to add more info. to my post and it duplicated it. I’m going to call them ASAP. Agree with ohtimberwolf. :o)

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yekrats

9 posts in 311 days


#8 posted 02-04-2016 11:45 PM


I gave you the link to Toolkraft. They are only there wed and thu 9-430. They made your saw. Factory closed in 1984 but they still offer support. I just talked to them.

- rick1955


Yes, thank you. Was just trying to add more info. to my post and it duplicated it. I’m going to call them ASAP. Agree with ohtimberwolf. :o)

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yekrats

9 posts in 311 days


#9 posted 02-10-2016 05:48 PM

Update:

Well piddles, just talked to ToolKraft and they say they made a lot of those old PowrKraft motors but this is not one of them. So, no help there. Guess I could hook the wires up by feel and memory and hope for the best – or – pull it apart and see where all the wires go. Not thrilled about pulling it apart because it’s 60 something years old and who knows what will happen. Also, I’m not an electrician. Just saying…

Anyhoo, I have 2 questions if someone can answer them.

1. When I took those 4 long bolts out of the case it didn’t want to come apart. I sprayed some penetrating oil on the armature shaft that goes through the bearing (you can see it in the pic) and tapped gently on it with a hammer. I tapped it through about 1 inch and so split the case a little to see inside/blow the sawdust out. I could then slide the armature shaft freely back and forth through the bearing about 1/2 an inch so it’s definitely not stuck inside the bearing. So why doesn’t it come apart? It looks like the bearing is pressed into the case and armature just slides through bearing. (shown it pic) It should just slide out, right? So, why doesn’t it? There’s no C-clips, retainers, bolts, nothing I can see that’s keeping it from coming apart. Is there another bearing on the shaft inside the case so just keep tapping, it will come?

2. There are 2 capacitors inside the motor case. What’s up with that? Now it’s a dual voltage motor (115/230v) so is the 2nd cap for the 230v side and just not being used or is this a dual cap motor?

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rick1955

258 posts in 898 days


#10 posted 02-10-2016 06:13 PM

Take it to a motor shop!

-- Working smarter with less tools is a true crafts person...

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ohtimberwolf

635 posts in 1819 days


#11 posted 02-10-2016 11:44 PM

I second rick1955, you will be happier.

-- Just a barn cat, now gone to cat heaven.

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yekrats

9 posts in 311 days


#12 posted 02-11-2016 12:44 AM


Take it to a motor shop!

- rick1955


I second rick1955, you will be happier.

- ohtimberwolf

Yeah, you’re probably right. :o)

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yekrats

9 posts in 311 days


#13 posted 02-12-2016 12:30 AM

I was finally able to split the case. The bearing (I’ll call it left side) just didn’t want to come out of it’s hole after 60 years of sitting. Right side is actually held in by screws and washers that are very hard to get to so haven’t pulled it. I was able to clean and polish the point contacts with my dremel and brass brush. Everything looks good and functional and I can see all the wires and switch so no need to go any further. I’m firing up my camera for some real pics and will post them asap. The 2 caps are in parallel so no worries. Likely just to fit the required capacitance in the allotted space.

Thank very much and I will keep you posted. :o)

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yekrats

9 posts in 311 days


#14 posted 02-12-2016 08:52 AM

Not much help, the camera won’t focus this close.

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ohtimberwolf

635 posts in 1819 days


#15 posted 02-12-2016 01:18 PM

Interesting, thanks for the update.

-- Just a barn cat, now gone to cat heaven.

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