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Sears air compressor engine won't run when plugged in

Posted by Cletus77 NC (My Page) on
Tue, Apr 23, 13 at 10:33

Sears Paint Sprayer/Air Compressor Model No. 106.153542 100 psi. Twin Cylinder
I got it out this spring to pump up my lawnmower tires and plugged it in and it started just fine--but when it got to 90 psi, the compressor stopped pumping up and made a low buzz sound. This buzz sound lasted about the amount of time it would have taken to charge up to 100 psi (which would have been normal) then it went silent. After pumping up my tires, I plugged it in again to see what it would do. Silence. No buzz, nothing. First time in over 40 years I've ever had a problem with it.
I can't find the manual for it and can't find a copy online. So I'm wondering if there's a part to be replaced or if it's just dead and I need another compressor. If the stopping in mid-charge and buzz symptom sounds familiar, please let me know if this is fixable or not.

Follow-Up Postings:

RE: Sears air compressor engine won't run when plugged in

Sounds like my Sears! I have a 1972 Sear’s model attached that has been fairly easy to maintain and diagnose problems. My cause of no power has occurred twice:

1. Bad contacts in the motor (from years of dust and paint) that was easily cleaned with the motor disassembled.

2. Bad auto pressure switch that you should be able to switch on manually or bypass. If it is determined to be bad, you can find a generic at a reasonable cost.

I get back and share manual info if needed.

RE: Sears air compressor engine won't run when plugged in

“I’ll” get ahead on a possibility as the starter capacitor’s dirty contacts. It’s always after I see the dirty contacts that I remember I d/n hear the distinct “Click” (at the start when they kick in to boost the start). Attached is not a good pic but you can see it’s easy to pull the end to clean the contact points. You might be able to see them w/o pulling the end. I have blown some clean knowing my disc sander will collect dust on the contacts and cause it not to start.

I’ll get back again!

RE: Sears air compressor engine won't run when plugged in

Although I have used this compressor for decades, my dad was the original owner and did the maintenance until the last decade after he was gone. I haven't done any maintenance since then, so cleaning the contacts will be my first job. It hasn't been used as a paint sprayer in decades. Normally, I use it to pump up car tires and so it doesn't stay plugged in. I had noticed last autumn that if I didn't use it for more than a month the air would slowly leak out somehow and I'd have to plug it in to get the pressure back up to 100psi.
Having other problems with my car and since I have to drive to town to use the internet at the library, prompt responses are difficult.
I appreciate your help and I'll clean the contacts and see if that does the trick. Thank you.

RE: Sears air compressor engine won't run when plugged in

Since the compressor has not been maintained lately, I’ll suggest you check or change the following.

1. Change the compressor crankcase oil with 30wt HD oil (“unless I find my manual and it requires different oil”).

2. Check and replace the compressor’s air filter if it’s too bad to blow clean. I have extras that I feel I purchased from Sears in the 70s. They w/n easy to clean when we painted cars (¼’ thick felt).

3. Open the tank’s bottom drain port with low pressure in the tank to help blow out any oil and water. I would suggest check the tank after any extended use (airing a tire s/n cause moisture IMO). It’s common for a bad tank’s bottom if the draining is not maintained.

I hope the compressor powered up after you found the need. Otherwise let me know where you are on the need.

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