i have a sears 919.152921 compressor that runs and does not stop

by Charles
(Fulton, MS)

My compressor runs and does not stop.


The pressure only reaches about 83 psi and no higher.

When I stop compressor I cannot hear or feel any air leaks.

The pressure will stay at 83 psi for several minutes with the compressor off.

When it is running I can hear what seems like air passing but nothing when I stop it. Can you advise what might be wrong?

Thanks
Charles
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Charles, a number of problems with a compressor pump can cause it to stop building pressure. Intake valve failure, pressure valve failure, gasket leak, piston seal leak are just a few.

On the sitemap page under troubleshooting there are links to pages about what causes a compressor to stay running and not build air pressure, including some things you can check.

Have a look.

Cheers,

Bill

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919.165230 compressor pops breaker- need bracket for start capacitor

by Jeff
(Florida)

After checking the obvious I have come to the conclution the start cap has malfunctioned once again. Problem is my 919.165230 compressor caps are attached to the back of the motor with a plastic bracket. Can you help me with a part number for the start cap or someone that can give me the part number or the ratings of the cap. Any help will be greatly appreciated
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There seems to be a number of websites that offer parts for your compressor, including Sears Parts Direct. You do want to contact their service department if you have not. They are your best source.

Perhaps other visitors can offer more?

Bill

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sears air compressor compressor blows the the 20 circuit breaker when it reaches 50 psi

by Henry
(San Lorenzo, Ca)

sears air compressor compressor blows the the 20 circuit breaker when it reaches 50 psi

1972 sears air compressor. 1 1/2 hp - 150 psi - model #106.153681

The air compressor has a 2 hp Dayton electric motor model #8WJ55U and it probably not the original motor.
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Hi Henry...

There are a number of things that could be causing this. The first that comes to mind is the power supply. You don't indicate how you are getting power to the Sears compressor. If it is not plugged directly into a clean power supply, that might be the problem.

If the motor is getting overloaded at the 50 PSI mark, then the next logical thing to check - since you can do it yourself - are the motor capacitors. I suggest this as it can be done without spending money if you are handy. See that page on this site for info.

If your intake filter is plugged, that could contribute to increasing load on the motor causing a breaker to blow, as could a failing tank check valve, or the intake or pressure valves in the pump.

I also would suspect the pressure switch itself, and is is somehow causing a short inside the switch at the 50 PSI mark and popping the breaker.

Many things to check, Henry. Good luck.

Bill

Comments for sears air compressor compressor blows the the 20 circuit breaker when it reaches 50 psi

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Mar 20, 2014
update
by: Henry

Had an electrician look at the compressor motor and he says the motor needs to be wired for 220 volts. The 2 horse motor is rated for 26+ amps and the 110 volt amperage won't handle the load. Exceeds 20 amps when the compressor loads up at or above 50 psi. problem solved
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Excellent.

B.























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