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28 gallon compressor....answer to your question about my problem

You asked if the air in the tank was ok. The answer is yes. It registers up over 125. However there is no air to run the tool. The tool side gauge shows no pressure. Turning the knob for more or less tool pressure gives me no different result. Removed the quick air comes out. Must have a valve stuck somewhere.

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Your regulator internal filter could well be blocked ,isuggest that you drain the tank fully and remove you regulator,check that tank is clear of rust or scale if all is clear then strip and clean your regulator
assembly or replace with new,problem should be gone all the best
this might be a silly question but the needle on your pressure guage couldnt be stuck?,have you drained your reciever?

Posted on Dec 08, 2008


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I have a older model RMM 3 GALLON Air Compressor I need a pressure control switch do you happen to know where I could get one at and how much

these days you can buy universal 95 psi factory pre set
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3 gal tanks should handle that ok with its safety valve set

if lucky you may come across an adjustable pressure switch


Oct 27, 2016 | Air Tools & Compressors

1 Answer

Have a 6.25hp , 28 gallon stand up. It fell over and bent some of the regulator parts. Got that straight but when you plug it in it does not start up. Un plug and try seams like something in the...

It sounds like the problem that you are having is with the unloader if there is only 30 to 40 pounds of air pressure in the tank it would probably start,but if the pressure is around 90 pounds it would be starting underload, the unloader should exhaust the air from the compressor so it does not have to start underload the unloader does two things it works the magnetic switch to turn the compressor on at probably around 90 pounds and off at about 120 it usually uses 120 V to work your magnetic breaker that uses 240 V I hope this helps.

Feb 19, 2011 | Campbell Hausfeld 28 - Gallon Air...

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Apr 03, 2010 | Campbell Hausfeld 28 - Gallon Air...

1 Answer

Does not put enough air in tank

You either have a faulty or out of adjustment regulator.


Jan 06, 2009 | Campbell Hausfeld 28 - Gallon Air...

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No air pressure past 60PSI on a 125PSI Campbell Hausfield WL61110

Your comperssor is oilless type and suffers from short cylinder / piston life. When the compressor no longer reaches cycle pressure the cylinder / piston should be replaced. These parts are available at I believe that the part number is wl210300aj. Not expensive, enjoy.

Dec 13, 2008 | Campbell Hausfeld 26 - Gallon Air...

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Tool side has no pressure

if there is sufficient air in the tank the regulator valve is either set to low or is stuck. if its stuck ur better off to buy a new one and replace the one u have.

Dec 04, 2008 | Campbell Hausfeld 28 - Gallon Air...

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