Question about Dewalt d55151 factory reconditioned emglo heavy - duty 2.5hp 4 gallon Electric hand carry compressor

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Hello my emglo 5.5 hp gas air compressor keeps pumping air until the pop off valve lets off at 160.Not sure what is wrong

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Pressure switch is not working /replace it

Posted on Jun 30, 2009

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Posted on Jan 02, 2017

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I have a emglo air comperssor. After it nfuns for a period of time , it has a hard time restarting or it will trip the reset button


This usually means your tank check valve is stuck open. It is a valve where the air line from the pump goes into the tank. The valve lets air into the tank then closes when the pump shuts down. This allows the air in the pump to be bled off so the motor can restart when the pressure in the tank drops down. Emglo compressor parts are getting harder and harder to find so try removing the check valve and seeing if there is something in the valve that's keeping it from closing. Sometimes you can clear/clean them out but more often than not the valve has to be replaced. Depending on the model you have, you may be able to find an after-market or generic check valve that will work.

Jan 30, 2013 | Air Tools & Compressors

1 Answer

Craftsman model # 919.167310. Pops breaker when wanting to reload air


If your compressor starts with no air in the tank but pops the breaker when it restarts with pressure in the tank it is usually because the tank check valve (choke valve) is stuck open. The valve lets air into the tank while the pump is running then closes when the pump shuts off so the valve on the pressure regulator can relieve the pressure in the pump head and lines. If the valve is stuck open, the motor has to fight the tank pressure to restart. Occasionally they can be cleaned up and will work but usually they have to be replaced. The valve would be on the tank where the copper line from the pump goes into the tank. There will also be a line running from the pressure regulator on it. The Craftsman part number is A19712.

Apr 10, 2012 | Craftsman Air Tools & Compressors

1 Answer

Can I adjust the tank pressure on a Husky 1506 compressor. pop off keeps engageing, so I need to adjust so that compressor shut off automatically


Before you change any parts, check that the pop valve is not faulty. Look closely at the pop valve to read set release pressure. If the valve is releasing before marked reading, replace valve instead to one slightly higher. The pressure may or may not be adjustable at the switch (need to replace the switch) depending on switch installed at the factory (parts list does not give enough information). If your switch has a remove-abel cap with adjustment screws/nuts, post again with model number of switch for info on adjustment. Good luck

Oct 06, 2011 | Campbell Hausfeld 5 Peak / 1.7 Running HP,...

1 Answer

I have a 80 gallon 5 hp ingersoll model #2475N5 serial #30T900896. Im using 10-3 wire on 40amp doible pole breaker. as its building air when it hits @50 psi it slows down. if I pull the pop off valve on...


T wo suggestions. 1- check the check valve located in top of the receiver tank by letting the unit pump up to 50 psi. shut it off and loosen the copper tube at the HP cylinder. if no air blows out the check valve is good. If it's bad it will blow until it empties the tank. If the check valve is bad replace it. 2- Tighten the drive belt. If neither corrects the problem remove the guard and rotate the pump by hand. If it's hard to rotate you have a pump problem.

May 08, 2011 | Ingersoll Rand Ingersoll-Rand 80 gal. Air...

1 Answer

Air compressor won't go over 40 psi?


my ace air compressor which is 26 gallon 5 hp will not get over 60psi what is wrong with it please?

Feb 14, 2010 | Craftsman 1 Hp, 4 Gal. Air Compressor

1 Answer

Compressor won't kick back on when its suppose too


The tank check valve is probably bad. Folow the large discharge line off the head, disconnecting one end of it. If you get air out of the line you have a bad check valve. If you don't get air you are probably looking at a valve job.

Apr 04, 2009 | Dewalt d55151 factory reconditioned emglo...

1 Answer

The compressor relief valve keeps popping, compressor runs


What pressure is it popping off at? You might have to adjust the pressure switch to a lower setting.

Apr 01, 2009 | Campbell Hausfeld 5 Peak / 1.7 Running HP,...

1 Answer

EMGLO AM78HC4V pump oil


use sae 30 non detergent oil in this compressor let me know if you got any other qeustions

Jan 08, 2009 | Dewalt d55151 factory reconditioned emglo...

1 Answer

Air compressor does not regulate pressure to set point.


Emglo airmate compressors are set from the factory to shut off at around 125psi. There is an adjustment (remove cover to pressure switch) that will controll the cut-off pressure but it is not recommended changing the factory setting. There is also a safety valve installed that will open at about 160psi. It is a small brass device with a pull ring. When things go wrong with the pressure switch (rectangular box with power cord coming out of one side) the safety will pop open. There is a pressure regulator with round knob on panel that will lower the pressure to the tool, however this regulator does not control the pressure switch. Let you compressor run untill it shuts off and verify pressure to be about 125, if it is then all as well. Good Luck

Jan 03, 2009 | Dewalt d55151 factory reconditioned emglo...

1 Answer

Clarke hunter 60 2.5 hp compressor , trip switch keeps tripping


if you are talking about the brass valve with a small pin in the middle.it leaks untill the pressure get to 15-25 lbs then the pin pops out and stops leaking and the compressor pumps to pressure. this is normal that valve it a cold start valve that allows the compressor to start with out binding

Dec 09, 2008 | Air Tools & Compressors

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