Emglo compressor (dual hot dog style) wont build pressure ...

by Rick
(Oakland CA)

DEWALT Emglo Twin Hot Dog Compressor  (Photo: www.amazon.com)

DEWALT Emglo Twin Hot Dog Compressor (Photo: www.amazon.com)

After quite a few years of sitting around, (the compressor, not me!) I fired it up today. The motor runs as it always did but the compressor is not building any pressure whatsoever.


I know very little about compressors and hope I can get some guidance on this. Should I toss her out and buy new or are there some simple steps to check for a problems that a non technician can fix?

Many thanks in advance for any help!
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Rick, step one - remove the intake filter to the pump head and, with the compressor running, put your hand near the intake to feel if there is suction. You are also checking to see if there is air huffing back out.

Poor intake suction could indicate an intake valve failure. Air huffing back out absolutely indicates an intake valve failure.

Whether or not you fix this, if it is the problem, is whether or not you are mechanically inclined and can get parts from your compressor source.

Normally, with the low cost air compressors, it may not be financially sensible to take the compressor to a repair depot as the cost of repairs may exceed the cost of a new compressor.

Next, visit the troubleshooting section on the sitemap page and follow the link to the pages about why air compressors run and don't build pressure. Lots more tips there.

Cheers,

Bill

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Emglo pressure only builds to 80PSI

by Brad Diehl
(Pennsylvania)

Emglod two tank air compressor

Emglod two tank air compressor

I have an Emglo two tank air compressor. It seems to function properly, but I have found that it no longer gets to maximum pressure. It runs and shuts off as if it reached 120 psi but when I hook up my framing nailer it cannot sink a 16d nail. It doesn't even go in half way. I can run my finish nailer okay with it but it has to refill frequently. What is the problem.

The pressure control knob has always been difficult to turn. Paryly because of the placement but also because it has been very stiff since day 1. I figured this was just how they were.

This compressor has not been used hard over the years but it was purchased new in the mid 90s for around $300.00
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Hey Brad...

You have two gauges on your air compressor. One of them displays the pressure in the tank, the other displays the pressure your regulator is set to, and this is the pressure that your air tools will received.

Please shut the Emglo compressor off, drain the tanks, close the drain, turn the compressor back on, and let it run until it shuts off on cut out.

As a comment here, please tell me, when the compressor stops, what is the pressure reading on the tank gauge, and what is the pressure reading on the regulator gauge?

Bill

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Binding up / slow revolutions

by Vince Hollis
(Eustis, FL)

I have a emglo LC serial # 061186251 that acts like it wants to lock up after running for 30 seconds or so.

I disconnected the dicharge air supply tube that connects both clynders together, plugged the one side that would build pressure, and now it seems to run fine. I left the disconnected tube from the other side, open while running, and it seemed to push a fair amount of air. The only thing I could think of is the 5/8" copper tube that runs from the connection tee down to check valve @ tank, could be creating too much back pressure with both cylnders pumping. Any other ideas would be great.

Thanks,
Vinnni
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Hi Vinni. I tried to find details about your Emglo LC, what size motor, cylinder info, and could find nothing on the Emglo site or on the DeWalt site.

So, here's what I think, since I can't look at your compressor to try to figure out what is what.

You say yours has two cylinders, and both cylinders tee into one line to the tank? That being the case, remove, clean and replace the tank check valve (after dumping all air) would be my first thing.

If one cylinder, however, feeds into another, and that second feeds into the line to the tank, then I would be looking at the intake valve and the pressure valve on the second cylinder as being of concern.

Please post more details if you wish. Your pose is live, and if other Emglo LC owners have information, I invite them to post as a comment as well.

Cheers,

Bill

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Identifying my Emglo compressor

by Mike
(Indiana)

I have recently bought a old emglo compressor with no manufacturer plate how do I tell what pump it is

I need to replace the motor but I need to know what pump I have, are the pumps marked somewhere?

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