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Help! My vintage lathe motor starts smoking and leaking oil after 15-20 sec of use.

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Forum topic by Rus2248 posted 08-19-2018 09:59 PM 2906 views 0 times favorited 19 replies Add to Favorites Watch
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Rus2248

19 posts in 94 days


08-19-2018 09:59 PM

Topic tags/keywords: lathe turning refurbishing repair motor

I recently aquired a vintage sears craftsman wood lathe and was looking forward to getting started turning wood. One thing after another, I finally got it all set to run. Understand, I have no mechanical experience and I am self/youtube taught. When I run my lathe, after about 15 seconds, the Craftsman motor starts smoking and leaking oil from the top cover (picture below). What can I do to prevent this?

-- Rusty, Wichita, Kansas


19 replies so far

View lew's profile

lew

12381 posts in 3927 days


#1 posted 08-19-2018 10:04 PM

Sounds like a bad capacitor. Unplug the lathe take off the cover and remove the capacitor. Any motor repair shop should have a replacement

-- Lew- Time traveler. Purveyor of the Universe's finest custom rolling pins.

View robscastle's profile

robscastle

5382 posts in 2376 days


#2 posted 08-19-2018 10:35 PM

A polychlorinated biphenyl (PCB) is an organic chlorine compound … Some PCBs share a structural similarity and toxic mode of action with dioxins. .... Examples of closed applications include coolants and insulating fluids (transformer oil) for transformers and motor starter capacitors, also may be found used in old fluorescent lights.

-- Regards Rob

View GR8HUNTER's profile

GR8HUNTER

4909 posts in 885 days


#3 posted 08-19-2018 10:46 PM

for sure a bad cap. make sure you get same specs. for your replacement :<))

-- Tony---- Reinholds,Pa.------ REMEMBER TO ALWAYS HAVE FUN

View Rus2248's profile

Rus2248

19 posts in 94 days


#4 posted 08-20-2018 12:16 AM

It would appear that you are speaking some form of english; however, I am unfamiliar with this dialect.


A polychlorinated biphenyl (PCB) is an organic chlorine compound … Some PCBs share a structural similarity and toxic mode of action with dioxins. .... Examples of closed applications include coolants and insulating fluids (transformer oil) for transformers and motor starter capacitors, also may be found used in old fluorescent lights.

- robscastle


-- Rusty, Wichita, Kansas

View Rus2248's profile

Rus2248

19 posts in 94 days


#5 posted 08-20-2018 12:18 AM

Thank you guys for the “Dummies Guide” breakdown. I will try this and see what happens. Unfortunately, I don’t know of any machine shops nearby, so I’ll probably be ordering it online. Thanks again!

-- Rusty, Wichita, Kansas

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GR8HUNTER

4909 posts in 885 days


#6 posted 08-20-2018 12:33 AM

when you take the cover off it will be bulging out just make sure the specifications are the same :<))

-- Tony---- Reinholds,Pa.------ REMEMBER TO ALWAYS HAVE FUN

View HerbC's profile

HerbC

1790 posts in 3031 days


#7 posted 08-20-2018 03:22 AM

You don’t have to know any of the local shops to do business with them. Googling “electric motor repair shop Wichita, Kansas” will produce pages of listings. A few quick phone calls will put you in touch with someone who will be able to supply your needed part quickly and cheaply…

Good Luck!

Be Careful!

Herb

-- Herb, Florida - Here's why I close most messages with "Be Careful!" http://lumberjocks.com/HerbC/blog/17090

View TheFridge's profile

TheFridge

10499 posts in 1658 days


#8 posted 08-20-2018 05:16 AM

Or grainger or A/C supply place of that doesn’t work out.

-- Shooting down the walls of heartache. Bang bang. I am. The warrior.

View JohnChung's profile

JohnChung

416 posts in 2246 days


#9 posted 08-21-2018 03:39 PM

just change the cap

View Fresch's profile

Fresch

342 posts in 2093 days


#10 posted 08-22-2018 01:58 PM

PCB, is a cancer causer, wash your hands before licking them. Not a concern.

View Nubsnstubs's profile

Nubsnstubs

1414 posts in 1902 days


#11 posted 08-23-2018 01:12 AM


PCB, is a cancer causer, wash your hands before licking them. Not a concern.

- Fresch


There are only one or two things that get the honor of a finger lick, and working on an electric motor wouldn’t be one of them…........ Jerry (in Tucson

-- Jerry (in Tucson) www.woodturnerstools.com

View Rus2248's profile

Rus2248

19 posts in 94 days


#12 posted 10-20-2018 06:25 PM

So… here it is, 2 months later, and I finally was able to work on the motor. I got a replacement capacitor and installed it yesterday, and she was running beautifully, for about 5 minutes. Then she started smoking again with oil coming from the capacitor housing. This time I did some serious investigating. I think I found the issue…

With some elbow grease, and most of my night, I got her all cleaned up. Still a little apprehensive due to my lack of expertise on this subject. Do you guys think it’ll work?

-- Rusty, Wichita, Kansas

View MrUnix's profile

MrUnix

7004 posts in 2371 days


#13 posted 10-20-2018 06:32 PM

Should be fine… there isn’t much to an induction motor and they are relatively easy to work on. Also, it appears your motor has sleeve bearings instead of ball bearings… Make sure you keep them well lubricated (any good ~20W non-detergent oil will work).

Cheers,
Brad

-- Brad in FL - In Dog I trust... everything else is questionable

View Rus2248's profile

Rus2248

19 posts in 94 days


#14 posted 10-20-2018 10:18 PM

Well, that’s the end of that… i give up

-- Rusty, Wichita, Kansas

View MrUnix's profile

MrUnix

7004 posts in 2371 days


#15 posted 10-20-2018 10:47 PM

You did replace the capacitor didn’t you?

Cheers,
Brad

PS: I’ve never seen one fail like that!

-- Brad in FL - In Dog I trust... everything else is questionable

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