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Model ihave a dewalt 2 gal air compresssor model# d55141,compressor keeps runing and pressure builds above 150 p.s.i.doesnt shut off

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There is a pressure regulator that is contained in the same housing as the on off switch. Take the housing cover off and see if there is a problem with the mechanics on the switch or the seal is bad.

Posted on Jul 21, 2013

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Posted on Jan 02, 2017

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SOURCE: Dewalt 4 gal air compressor will not build pressure in take.

The bleed valve is an unloader of sorts that allows the compressor to start with-out a load. It closes when the pressure in the airline reaches about 20-25lbs with good volume. If air volume is not sufficient, the valve will not close. To solve the problem lets do a few tests. A long cord will reduce power and reduce air volume. Try powering the compressor with-out extension cord. If bleed valve closes when you do not use a cord, the compressor is not getting enough voltage, use shorter cord of the 12 gauge quality and more hose to reach work. If valve still does not close, check for air leaks on all fittings including around pressure switch and drain valve with soapy water. Repair as necessary and retest. If no leaks were found, temporarily plug bleed valve port with screw/bolt and run compressor till set pressure cut-off while counting minuites/seconds. The compressor should fill and shut off within three minutes or so. If it takes an unusually long time to fill, then the reed valves /valve plate is worn and leaking pressure back into cylinger. Leaking valves will usually result in very hot discharge airline/air. Reinstall the bleed valve after test. Parts and partslist are available at www.toolpartsdirect.com . Good luck on the repair and email if you have other questions.

Posted on May 06, 2009

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SOURCE: My craftsman air compressor model 919 16737 1.1 hp

Probably the check valve has failed. It apparently is where the pipe goes into the tank from the compressor.

Posted on Aug 24, 2009

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2 Answers

My D55141 heavy duty 2gal (7.6L) 150 psi max builds pressure up to around 150 releases pop off valve then keeps running, what causes this problem?


The pressure switch is either out of adjustment or has failed. The compressor should shut off at a much lower pressure than the safety valve (~100 psi)

Nov 20, 2014 | Air Tools & Compressors

1 Answer

Where can I find a wiring diagram and a repair manual for a Dewalt air compressor D55141 2 gal ?


Go to "ereplacementparts.com" for exploded parts and pics. You will probably have to go to DeWalt for a wiring diagram but seeing the simple nature of this compressor any good electrician should be able to work it out.

Nov 03, 2014 | Air Tools & Compressors

1 Answer

Dewalt compressor builts pressure but doesn't supply hose and tool with the air


Dewalt sells a rebuild kit for the regulator (my be part # N008792). You could try lubing the internal parts before ordering the kit. With no air in the tank, remove the plastic knob assembly and pull out the small piston. In the center of the valve body will be a small brass plunger. You should be able to push this plunger in with thumb pressure. If stuck, remove the nut on the back of the valve and lube the plunger with grease (pull the plunger off the back-nut if stuck in place). Lube the piston and cylinder (black plastic piece) with grease and reinstall. The small piston has a lip seal that should point toward the body of the manafold. For emergency air, remove the safety pop-valve and install a tee fitting. On this tee fitting reinstall the safety valve on one port and a quick disconnect on the other. You can draw air out of the tank at full pressure untill you repair the regulator. Good luck

Mar 29, 2013 | Dewalt D55141 Heavy Duty 2 Gal, 150 Psi...

1 Answer

D55152, left gage shows 40psi, right gage 100. Whats going on. how can i buy a manual? thanks


The right guage is the actual tank pressure. The left guage is the pressure for the air hose. If you turn the adjustment dial the air pressure guage on the left will go up or down. You should be able to go to the dewalt website and find an owners manual for this compressor. I personally own this compressor and it is a good one.

Nov 14, 2010 | Dewalt D55141 Heavy Duty 2 Gal, 150 Psi...

2 Answers

Hi I have a Dewalt d55141 emglo contiues to run


Open the shut off switch box and adjust the cut out pressure.

Nov 17, 2009 | Dewalt & 2HP Hand Carry Heavy Duty...

1 Answer

It only builds pressure to 70 psi.


there the pressure regulator between the 2 guages needs turned up. it may be a locking type if so pull out or push it in and turn it, if that doesnot work the regulator may need to be replaced.

Jul 19, 2009 | Dewalt D55141 Heavy Duty 2 Gal, 150 Psi...

1 Answer

Dewalt d55141 Builds only 45psi


Check the unloading valve. Accumulation of dirt might be preventing the valve to fully close, by-passing a portion of the compressed air.

Jun 07, 2009 | Dewalt & 2HP Hand Carry Heavy Duty...

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