Model #921166430 CRAFTSMAN Air compressor

  • Air Compressor
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Question and Answers

Q:

motor will not turn on 921.166430

A:

Thanks for the inquiry and for being a valued member.

We would recommend taking the capacitors to a local electrical supply house. They will usually test the capacitors free, and they can help you match up a replacement since these are not being broken down for sale on this model. 

I hope this helps and thanks for using SearsPartsDirect.com. We appreciate your business. 

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Jeff Wallace Sr -
Sears Technician
March 03, 2015
Q:

compressor will not kick on. 921166430 Craftsman Air compressor

A:

Thank you for choosing Sears Parts Direct. I will be happy to help with your air compressor. Upon researching model 921166430; it could be a capacitor on the motor. Usually one is used to start the motor and one is used to run the motor. It could be the motor itself is worn or damaged.

Thank you for choosing Sears. We appreciate your business. Have a great day.    

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Jeff Wallace Jr -
Sears Technician
March 01, 2015
Q:

Compressor not charging and tripping reset 921-166430

A:

Thanks for the inquiry and for being a valued member.

I am sorry to hear of the issue you're having with the compressor not building pressure and tripping the breaker. I know how concerning that is to have happen.

Typically when a compressor trips a breaker, it's because the check valve is defective or the motor is defective. Usually when the check valve is at fault, the compressor will still build pressure, but on the refill it will trip the breaker. Since your compressor is not building pressure at all and tripping the breaker, I suspect the motor is at fault. 

To be sure, you can check the amp draw of the motor with an amp clamp. If you have an amp clamp, you can hook it around the black wire going to the motor. Then turn the unit on and observe the meter. If it shows more than 15 amps after it starts the motor needs to be replaced.

You can also take the motor down to an electrical supply location and have it tested. They will usually test them free of charge. That sounds like the most likely culprit. 

I hope this helps and thanks for using SearsPartsDirect.com. We appreciate your business. 

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Jeff Wallace Sr -
Sears Technician
November 01, 2014

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