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

1 Answer

Which part to replace?

DeWalt Emglo 2hp 4 gallon compressor
There is a leak coming from inside the pressure adjustment knob. I have pulled it apart and "re-seated" all the parts and inspected them. No visible tears or holes in gasket, etc. Put it all back together and it still leaks from inside, (verified with bubble test). Any ideas? Do I need to replace the knob and spring part or the section on the manifold?

Thanks for any and all input.

Posted by on

1 Answer

  • Level 1:

    An expert who has achieved level 1.

    Corporal:

    An expert that hasĀ over 10 points.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 10 Answers

You need to replace the regulator (pressure adjustment assembly.)
You can find the part number by searching on the DeWalt web site. It's important to know not only the model number but also the type number of your compressor; the type number is which version of the compressor you have.

Posted on Feb 26, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Compressor relief valve opens 150lbs on my d55141


That is the compressor's holding capacity 150psi. Therefore, the cut-out pressure has been reached. The safety valve opens to relieve the excessive psi. Compressor should come on at 120 psi.

May 15, 2012 | Dewalt d55151 factory reconditioned emglo...

1 Answer

Hey there. I am having problems with my Emglo Dewalt d55151 compressor. I have taken it apart and and cleaned everything up. The reason I did all this was..because the cold start valve stays open and its...


The cold start valve will close when volume of air from compressor is sufficient to overcome spring under pin (allows the motor to come up to speed). Evidently your compressor is producing very little air. Usually the problem is leaking or broken reed valves or gaskets. Remove the head and look for torn/ leaking gaskets and replace as needed. Examing the reed valves and seats and look for broken cracked reeds or worn seats. Some of the valve plates used in Dewalt compressors are made of aluminum and would fail. Parts are available at www.toolpartsdirect.com or local dewalt service center. Good luck with your repair.

Apr 25, 2011 | 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

Need schematic for electrical on am780 emglo


I would suggest contacting Master Tool Repair, great web site to get information on these little machines, I know you can get owner manuals from them that may contain wiring diagrams with them.

Dec 13, 2009 | Dewalt d55151 factory reconditioned emglo...

3 Answers

I have a dewalt D55155 compressor that has not been used in three years. It starts and builds pressure, but does not charge the air hose. Ant thoughts?


have you turned up the regulator, the big black know by the output fitting

You may have to open andclose it a few times cuz it may have trash or be stuck

Nov 04, 2009 | Black & Decker Dewalt #D55155 2HP 4GAL...

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...

Not finding what you are looking for?
Dewalt d55151 factory reconditioned emglo heavy - duty 2.5hp 4 gallon Electric hand carry compressor Logo

210 people viewed this question

Ask a Question

Usually answered in minutes!

Top Dewalt Air & Gas Compressors Experts

John Trevino

Level 3 Expert

1378 Answers

JOHN LAPIER

Level 3 Expert

2386 Answers

yadayada
yadayada

Level 3 Expert

60971 Answers

Are you a Dewalt Air and Gas Compressor Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...