Sear Air Compressor Pressure Switch

by Dave

I have an older model sears air compressor, single cylinder, model number 10615340 for which I need a wiring diagram going in and out of the pressure switch.


Bill answers...

Hi Dave...

I'm about 30 days away from publishing my ebook "The Home Compressor" which will provide step-by-step instructions in changing a pressure switch.

One of the things in that process is BEFORE you remove the pressure switch, you take the cover off (after unplugging the unit of course) and tagging each wire with where it came from and where it has to go when you reassemble.

For those of use who only change a pressure switch once or twice a lifetime...unless you're an electrician, you can't be expected to just know.

For what it's worth, you'll have an electrical supply and a return from the plug side, and the same to the motor. One of them (the supply or the return) is wired through the pressure switch to open and close the circuit when the pressure is reached or the pressure bottoms.

Sorry, I can't be more specific than that.

Cheers, and sorry for taking so long to respond.


Comments for Sear Air Compressor Pressure Switch

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Jun 24, 2011
need help
by: Anonymous

trying to install a new pressure switch .need to know what l come from and where l come from


No schematic under the cap?

Dec 17, 2010
by: Dennis

The KEDU QKS 12 pressure switch is available though Part# HH123008-64, cost of switch when I purchased it, $14.44 plus shipping. Hope this helps anyone who might need one.

Nov 23, 2010
by: Anonymous

sam you can convert any kind of pressure switch you can use also pressure switch for pressure tank for water no problem.try and see... the base you can modify...gud luck!

Dec 01, 2008
Broken Kedu Pressure Switch
by: Sam

I broke the pressure switch on my Hitachi-Koki 2 HP air compressor. The manufacture for the switch is Kedu and the part number is QKS12. I have tried to contact Kedu with no success. Can you help me find a supplier for this switch or a way to contact the manufacturer?



Sam...sorry, I don't know of any suppliers.

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sprays oil

by Nikki
(Tigard, Oregon)

just purchased air compressor, ran through the correct break in as instructions stated, have had for 2 days and have noticed a light mist of oil shooting out of the head area along with some air...

Bill says...

Out of the head area isn't specific enough, Nikki.

Have a look at the intake port. Is this where the mist ans air is coming from?

You may only be seeing atomization of oil that was in the cylinder when the compressor was built, or it might be oil wicking by the piston seal.

However, it should not be coming out of the intake port. If it is, that would suggest to me that an intake valve is not seating properly.



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