Husky compressor motor CB tripping

Have a 17gal Husky air compressor and the motor protection thermal breaker keeps tripping. It will start and run for a varying amount of time depending on the outside temperature. The breaker will trip and if I turn off the power switch I am able to restart after a few minutes but the same thing happens over and over again.

I have put an amp clamp on and can confirm that the motor CB trips when it draws ~15, so the breaker is doing what it is supposed to. But why is the motor drawing that much current? The motor does sound like it struggles as the tank PSI increases. Do I need to rebuild the pump mechanism? Is there oil in these "oil less" pumps that I need to look at?

Any ideas would be greatly appreciated, have been banging my head against the wall for a long time.


Husky 17gal Horizontal
Model: WL651004AJ
SN: L8/29/05 -04131
Pump NO: WL390100AJ
Wired for 120VAC/15A (yes I have the correct feed CB as well)

Comments for Husky compressor motor CB tripping

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Jun 02, 2015
Husky motor tripping
by: Bill

If this were my compressor my friend, and I was not using an extension cord, then I would suspect that you've got a pooched capacitor.

See the page on this site about how to check them.

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