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Forum topic by darb posted 12-07-2015 02:44 AM 699 views 0 times favorited 8 replies Add to Favorites Watch
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darb

7 posts in 368 days


12-07-2015 02:44 AM

Topic tags/keywords: lathe

Hi all, new to this site and wood lathes. I have a Delta wood lathe 46-544 (220 electric connection), on several occasions it has stop running. I have taken the electric motor out, cleaned it, etc. and put it back in, and it has run. It has stopped again during a xmas project. I was turning small pieces (8” by 2”) to make a muddler, used to crush herbs in cocktails. Also, it is difficult to change speeds and I am not sure if the shifting handle and gear is in the right place. I didn’t to find a lot of info on the internet about troubleshooting the 46-544. Any info would be appreciated Darb.


8 replies so far

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ForestGrl

445 posts in 551 days


#1 posted 12-11-2015 09:41 PM

Do you have an owner’s manual? Are you directed to change speeds only when the lathe is running?

When the lathe quits on you, is the motor warm? Any odd aromas?

-- My mother said that anyone learning to cook needed a large dog to eat the mistakes. As a sculptor of wood I have always tried to keep a fireplace. (Norman Ridenour)

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darb

7 posts in 368 days


#2 posted 12-11-2015 10:33 PM

Hi Forestgrl, thanks for the response. I do not have a manual. The label on the lathe indicates to change speeds when the lathe is running. No odd aromas noticed. The motor is warm, however, it usually has been running for a while. This usually happens when I stop and check the wood project. When it does this the motor turns slowly for a few seconds and then clicks off. I have tried the reset button and it does not start turning. The motor hums and it is warm, but again it has been running for a while. I have taken the motor out several times, taken it apart, disconnected the wires so that I could take the part that turns inside the copper wiring, spayed it with electronic cleaner spray and reassembled it. It always works when I do this. The last time this happened I just pulled the armature out and sprayed it with the electronic cleaner spray and it worked after this. But I do not know why. I took the motor apart thinking that if it was the motor I had nothing to lose by experimenting with it. I am not that mechanically inclined, etc. Thanks again, Harry

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MrUnix

4230 posts in 1664 days


#3 posted 12-11-2015 10:47 PM

I was going to suggest the start circuitry (centrifugal switch, capacitor), but from the very little info I can find for that lathe, it appears it’s a 3/4hp 240v 3-phase motor… is that correct?

At any rate, I doubt that cleaning the armature is what is actually ‘fixing’ your problem, but probably something that you are doing in order to yank the motor and tear it open that is. Maybe something even as simple as a connection that is getting wiggled as part of your procedure.

Cheers,
Brad

-- Brad in FL - To be old and wise, you must first be young and stupid

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darb

7 posts in 368 days


#4 posted 12-12-2015 08:53 PM

Hi Brad, thanks for the response. It is a 1 1/2 hp. I did get a new capacitor and put that in a few months ago. Still have the problem. I will check the connections to see if any are loose. Best Harry

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MrUnix

4230 posts in 1664 days


#5 posted 12-12-2015 09:29 PM

Ok, since it’s single phase, check the centrifugal to make sure it moves freely and maybe clean up the contacts with an emery board or sandpaper if they look a bit dirty… the symptoms you describe (not starting, just humming, turns slowly then clicks off, etc…) are typical of either a bad centrifugal switch or capacitor. It could also indicate a loose connection that becomes worse when heated, so check the start/stop switch, wiring and connections as well, but my bet is the start circuit somewhere. Oh, I have seen ‘new’ capacitors that arrived DOA or died shortly after, so a quick check with a multimeter to verity it’s good might be worthwhile (you can use any cheap multimeter with a resistance setting).

That lathe was known under several different model numbers. It had to do with what configuration it was shipped as (depending on it being 4 speed or variable speed, and motor size). But the 12” Gap bed lathe was sold for many years with very little changes made to them. Here is a manual that should be applicable:

12 inch Gap Bed Lathe Manual
and here is a parts diagram:
46-500 12 INCH VARIABLE SPEED WOOD LATHE

There are actually several different ones of the above over at the VintageMachinery site, so you might want to check them out as well.

Cheers,
Brad

-- Brad in FL - To be old and wise, you must first be young and stupid

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darb

7 posts in 368 days


#6 posted 12-13-2015 11:35 AM

HI Brad, thanks, I will be checking things. Harry

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darb

7 posts in 368 days


#7 posted 12-18-2015 11:10 PM

Hi all, thanks brad for the advice. It appears the problem is the on/off switch. Thanks to the rest of you folks that offered info/advice. Harry

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MrUnix

4230 posts in 1664 days


#8 posted 12-19-2015 01:02 AM

Good news indeed… at least you won’t have to be tearing the motor apart any more :)

Cheers,
Brad

-- Brad in FL - To be old and wise, you must first be young and stupid

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