Philco D10 turntable motor - Printable Version

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+--- Thread: Philco D10 turntable motor (/showthread.php?tid=8945)

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Philco D10 turntable motor - wjheil - 03-03-2014

Hi,

I am trying to restore a D10 turntable from a Philco 46-1209.

The motor is very stiff. I removed it and oiled the bushings. It is better but still too stiff. Also when I apply power to it through a variac I get no response. No hum or indication of any sort. The motor winding measures 40 ohms.

There is a 50 ohm wire wound resistor in series with the motor winding. It has some of the winding exposed on one side for a possible tap.

It does not appear in the manual I have.

Any suggestions? Are replacement motors available?

Thanks,
Wayne

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RE: Philco D10 turntable motor - morzh - 03-03-2014

If it is the transformer type asynch motor, it relies on not being stiff.
if you give it a start with your fingers while unpowered, it should freely rotate for a few seconds.

If it gums up like that you have to take it apart and not just lubricate it but clean it first.
Then some of those motors have a plain bearing whith a ball, like so
http://www.pkkazan.ru/support/vibor/
where the axle goes.
If this ball is slightly off-center this will impede rotation. The ball might have a compression seal made of felt or similar material soaked in oil. This ensures the ball itself rotates freely and so sels-centers when the motor is assembled.

So the sleeve (both sleevese, butt and front) has to be cleaned, and then the back ball fitting (gasket) soaked with some penetrating liquid oil (not really lithium grease). Then everything lubed and assembled back.

The rotor should freely rotate without any impediment.

Again, if we are talking of the motors I have in mind.

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RE: Philco D10 turntable motor - wjheil - 03-03-2014

Thanks morzh. I think the motor is the one you described. I have taken the motor apart but have not been able to remove the butt end from the shaft. I did not want to force iIt is still stiff after I oiled it. so I will try some penetrating oil on it. I couldn't read the link you sent me. Looked like Russian.

Again Thanks,
-Wayne

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RE: Philco D10 turntable motor - morzh - 03-04-2014

Yes link is russian, shows a sliding bearing in the ball.
The link works fine from my iPad.

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RE: Philco D10 turntable motor - wjheil - 03-04-2014

Taking it apart and soaking it with penetrating oil worked.

Know anything about the 50 ohm resister?

-Wayne

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RE: Philco D10 turntable motor - morzh - 03-04-2014

I do not have the schematic showing the resistor.

In a shaded pole motor (which is what it is) resistor is simply used to slow it down. I guess it is your speed adjustment.

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