Craftsman 919.167310 barely starts to turn over and it trips the breaker

by Matt
(Atascadero, CA)

Hi Bill,

So the compressor barely starts to turn over and it trips the breaker. The petcock is open so there's no air build up, I've changed both the start and run capacitors, and still no start up. The compressor turns freely. I'm stumped.

Comments for Craftsman 919.167310 barely starts to turn over and it trips the breaker

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Mar 06, 2017
caps and switch
by: Doug in s.d.ca.

Matt, did you see the centrifugal switch on the motor when you had the cap off?

We've seen at least one case where those contacts became welded together, which might also explain your situation.

Mar 05, 2017
Bill and Matt
by: Doug in s.d.ca.

Actually, I asked because I don't see any caps on the parts diagram or list; just the motor assembly, and since Matt said he's changed them, I wondered where they are.

Matt - can you try a different house circuit? It's possible the breaker you're on is weak or failed.

Mar 05, 2017
Cap location
by: Matt

The Run Cap. is on the outside of the motor, and the Start Cap. is inside the back cover on end of motor.

Mar 05, 2017
Tried new Caps.
by: Matt

Hi Bill,
I did test them but was unsure of readings so I installed new start and run capacitors. Still slow start and blows the house circuit in about 2 seconds.

Mar 05, 2017
Caps?
by: Bill

Doug's question about motor capacitors is, I suspect, asked as you'll need to know where they are to test them.

I suggest you see the page on this site about how to test them, and do so. A failed start capacitor has the compressor motor symptom you describe.

Mar 04, 2017
house breaker
by: Matt

I should have mentioned it was the house breaker, and it is a 20 amp. plug with nothing else on the circuit.

Mar 03, 2017
919.167310 trips breaker
by: Doug in s.d.ca.

The outlets' breaker or the motor breaker?

Either way, try a different outlet, preferably on a 20Amp circuit with no other appliances in use.

BTW, where are the caps on this? Inside the motor case?

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