After making 150psi, Compressor turns on to refill and trips breaker.

by Jason
(Attleboro, ma)

Hey BILL!


Thanks for your site. I inherited an Old Sears 106.153680 1 1/2 hp. It turns on great and gets above 150psi no prob AND I hear the unloader valve release head pressure.

When the compressor kicks on again to refill it runs for a few moments, boggs down, and trips breaker.

I read your posts on cleaning out the check valve. I did that! carb cleaner then silicone spray. The only improvement I can see is that it can turn on at 100 psi and power through to 150+psi.

Do I need a new check valve???

Thanks!

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Bill says...

Jason, thanks for posting about the unloader valve function, as that is often the cause of the compressor symptoms you relate.

Cleaning the check valve is always a good thing.

Eliminating those takes me to the next item that affects start up, and that's the capacitor. See how to check that linked under electrical issues on the site map page.

Cheers,

Bill

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Sears #106.153.882 air line between pump and pressure switch

by MGB man
(Jacksonville, IL)

pressure switch

pressure switch

pressure switch
pressure switch
new pump

Old pump failed (bearing) ??? Bought a new pump which is SUPPOSED to replace old one. New one has no attaching point for air line between pump and pressure switch. How do I make sure the pressure switch can be included in this replacement process ??? Has to be a way to hook it into the system. Please see pictures. Thanks much !

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Sears Compressor #106.153882 unloader valve line?


How do I use the pressure switch when replacement pump has no attaching point for metal line attached to head from pressure switch on old pump ??
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There has to be a line from the pump head that terminates at the unloader valve so the air over the piston can be released when the compressor stops.

Note the line from the pump head to the tank. It is possible that the line to the unloader comes off the tank check valve fitting.

Bill

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