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Discussion Starter #1
Hi, folks. I have an old Sanborn compressor. Or at least, it was. About two years ago the compressor seized and I replaced it with a Harbor Freight equivalent. So far so good on that part, but now my motor is bogging down. It starts just fine, but then bogs down and runs very slowly, sometimes almost stopping, then it will usually pick up speed, sometimes to almost normal speed.

I checked out the Troubleshooting sticky above, and ruled out the pump itself. It turns over freely. According to what I read, the prime suspect is the capacitor. It has a Westinghouse 5 hp motor, and I believe it to be original. (see data label, attached below) I think it looks like a single capacitor.

On the other hand, I have spun the motor by hand and found that the bearings do not turn smoothly.

My questions:

  1. Where can I get a replacement capacitor?
  2. Could the bearings be the problem?
  3. Are they replaceable?
  4. Are they greaseable?
Thanks for any help you can offer.
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