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Re: Electric motor fault

To: Paul Humphries <>
Subject: Re: Electric motor fault
From: Mike Sloane <>
Date: Mon, 11 Sep 2000 16:16:58 -0400
I would guess that the starting capacitor is the problem. Especially on a
motor that old - capacitors dry out and lose their electrolyte and/or short
out over time. I suspect that you can take it or a Graingers or other
industrial supply place and get a replacement that won't be too expensive.

Paul Humphries wrote:

> I am rebuilding a 1940's MYFORD ML4 lathe which only needs a general
> clean-up and repainting.
> I have started on the countershaft assembly and today have tried to get
> the electric motor to work. At first it turned over very slowly then,
> after switching the power off & on several times it burst into full
> speed without hessitation. It was allowed to run for ten minutes or so
> and the next couple of trys it started at full speed straight away. It
> now will only turn over at slow speed and the motor casing is getting
> warm. It has a large capacitor on the casing which I assume is needed
> for starting - could this be the faulty item ? Would the slow running be
> a symptom of a duff capacitor ? Any help or advise would be appreciated
> as I would like to keep the 1940's motor which, when running at full
> speed, is very quite and smooth.
> Thanks.
> Paul Humphries,
> Stoke-on-trent,
> Staffs.,
> UK.


Mike Sloane
Allamuchy NJ
or <>

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