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

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EMGLO AM78HC4V pump oil

Need to change pump oil and need to know what oil to replace oil with

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  • rgleim Jan 08, 2009

    Thank you

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

Posted on Jan 08, 2009

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1 Answer

Where is the oil drain for am78hc4v


There are four screws that hold the end cap on the pump. The fifth screw at the bottom, middle of the cap is the oil drain plug.

Mar 14, 2012 | Dewalt d55151 factory reconditioned emglo...

1 Answer

Dewalt emglo d55155 air compressor-what type of oil? this machine is electric


Need to use air compressor oil it is available at you local hardware store in the tools department.

Feb 05, 2011 | Dewalt d55151 factory reconditioned emglo...

1 Answer

It is an electric motor Dewalt Emglo Compressor model#D55151. What type of oil should I use in it?


Dewalt recommends using synthetic pump oil, however if you only use the machine occasionally and not in a commercial setting, standard compressor oil will work great and save you money. Synthetic oil will last longer and can take much higher temperatures without breaking down. Lowes sell the kobalt brand of compressor oil and sells for about $3 for standard and $7 for synthetic. Home depot sells campbell hausfeld brand but equally as good. Auto parts stores also sell a line of compressor /pump oil just watch pricing for your needs. If you can't find compressor oil, non-detergent motor oil works just fine. Good holidays

Dec 15, 2010 | Dewalt d55151 factory reconditioned emglo...

2 Answers

Emglo airmate AM78HC4V; when trying to start compressor the motor will only hum


I had the same problem. Replace the motor capacitor. small white cilinder part with two wire plugs conected to it. This will have a single bolt holding it to the frame casing, you will find it under the black plastic shroud that covers the motor. Take it into any electrical or compressor shop and they will check it for you. costs about $35.00.

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

1 Answer

Manual for Emglo Air Mate Compressor


Manual for the similar dewalt model is at www.dewalt.com, click on parts & service icon, then enter D55151. Or try clicking here: http://www.dewaltservicenet.com/documents/English/Instruction%20Manual/5135175-01,D55152,Elec.pdf This Dewalt compressor is one of many versions of the Old Emglo AM78 compressor. There are several other brands built with the exact same design such as the Senco line. For parts list of actual Am78hc4v go to mastertoolrepair.com. If you have questions or problems with this compressor please email, Good luck

Jan 28, 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...

3 Answers

Compressor will not shut off


The switch is bad, replace it, this should solve the problem.

Nov 17, 2008 | Dewalt d55151 factory reconditioned emglo...

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