Craftsman won't build pressure

by kenny Maldonado
(colorado springs)

I have a A craftsman 5 gallon 1 horse direct drive oil lubricated cast cylinder air compressor.

I tried using two coil roofing nail guns on this compressor and now the thing doesn't even build any pressure, I've checked the release valve it's closed, exhaust seems to work right. what's your thoughts?





Bill says... hmmmm?

Why would you use two coil roofing nail guns on your poor compressor? What did it ever do to you?

Am I to understand that you have connected two air guns from the compressor discharge coupling, and neither will run?

There are many reasons why a compressor will run yet not build pressure in the tank. And if there's no pressure in the tank, then the nail guns can't run.

When the compressor shuts off (assuming it does) does air bleed out from the pressure switch unloader valve constantly? That being the case, here is info about leaking unloader valves.

On the other hand, if your compressor is running continuously and not gathering any pressure in the tank, then it won't ever reach cut out, and your unloader valve won't ever open, so you have a different problem. Here is info on why your compressor won't build pressure.

Cheers,

Bill




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Craftsman won't build pressure

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Apr 17, 2011
 Check your gaskets
by: Anonymous

If your air compressor builds pressure to a point, and then won't go any higher, check your gaskets. If you take the compressor apart, be prepared to replace the gaskets as they are brittle after use and most likely will tear.

Check the gasket that divides the chambers by the air intake. Make sure that there is no part of the divider gasket missing. Even a small gap can cause pressure to cease building. You can buy replacement gaskets for most brands, or you can buy a sheet of gasket material at an auto parts store for under $10 and cut your own. Try to keep the old gaskets in tact as much as possible to use them as a template.

_____________________

Good advice. Thanks,

Bill

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