Sanborn air compressor leaks

I have an old Sanborn air compreesor that I tried to use.

I went to the Casey's Store and filled it with air, but it would only take 40 lbs. I tried to use it when I got it home, but I couldn't hear the air going into my car tire.

The tire went down 10 psi at this point. I turned the dial clockwise and counterwise but still never heard air escaping.

It was empty by the next morning. How do I get it to release air when I want?

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Bill says....

A few issues here, I think, visitor.

When you say that it would only "take" 40 PSI, I am not sure what that means.

Does the compressor run? When it does run, do you mean that when the compressor is running, the tank pressure only goes up to 40 PSI?

What tire pressure are you trying to achieve? Compressed air flows from higher pressure to lower pressure. If your tire pressure is 40 PSI, and the tank pressure is 40 PSI, then in theory there will be no flow.

But, cheap air gauges are notoriously inaccurate. So, even though the gauge shows 40 PSI, it might only be 35 PSI in the tank, and if the tire had 40 PSI in it, air would flow from the tire back to the compressor tank.

Please provide more info as a comment here so we can help figure out what's going on with your Sanborn air compressor.

Cheers,

Bill




Comments for
Sanborn air compressor leaks

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Dec 27, 2011
 air compressor
by: Anonymous

I've been told that the Casey's store air compressor used for filling up tires, etc. doesn't have enough pressure to fill a compressor. It rebuilds its pressure after someone uses it, but if too many people use it in a row, it wouldn't work either. I need to go to a place with a higher pressure and see what happens. Thanks.
Dec 26, 2011
 Sanborn air compressor
by: Jan Dickson

I don't know what the pressure is. I just filled it at a Casey's Store and someone told me that they didn't have much pressure like a good service station would. But, the gauge to the compressor stopped rising when it reached 40 lbs. It goes up a lot higher than that though.
Dec 23, 2011
 air compressor
by: jan dickson

The compressor stopped filling up with air when the gauge read 40 lbs. The compressor doesn't run. I just turned the dial and thought it would fill from the compressor to the tire. I want 38 psi in my tires so that might be the problem.

___________________________

Still puzzled, Jan. You are using the Sanborn compressor as just an air storage tank, and the tank will only hold 40 PSI? Something wrong with that. When you were filling it, what was the pressure in the line you were using to fill the tank?

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