Question about Dewalt Air Tools & Compressors
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Posted on Jan 02, 2017
Your comperssor is oilless type and suffers from short cylinder / piston life. When the compressor no longer reaches cycle pressure the cylinder / piston should be replaced. These parts are available at www.chpower.com I believe that the part number is wl210300aj. Not expensive, enjoy.
Posted on Dec 13, 2008
This is a fairly common problem in small pancake compressors. I would start by making sure no air is escaping from the condensation drain valve on the bottom of the tank.
Next Pump it up as much as it will hold and turn it off. Listen for air leaks around the fitting on the bottom of the regulator that screws into the tank. These really need teflon tape and to be screwed in well.
Next check the regulator itself. These are rather inexpensive and don't last long when the compressor is used a lot. Also it doesn't take much of a bang when jostled around.
Is the regulator for tank pressure set correctly? Thump the glass covering the dial with your finger. Sometimes it sticks and you'll think it's set correctly when it isn't.
Lastly, check each connection for tightness with teflon tape. If all looks good, gamble about $20 on a new regulator. Odds are that's where the problem lies. This has happened to me a few times.
Posted on May 12, 2009
if this is an older or much used unit, cylinder/piston may be worn, unable to push higher psi, which would explain no leaks. if newer unit, seems like regulator unit/valve faulty
Posted on Jul 24, 2009
Maurader1 an apprentice has this problem solved and is spot on. All these gurus and wiz need to stick to the basic and common sense. The first place your pump will give out after use or abuse is the gasket. All this garbage about defective reeds and defective pressure switch is a lot of nonesense if you first don't rule out the most common problem the head gasket. I'm cheap and this thing has paid for itself 10 time over. You can get a gasket kit for $7, but I fabricated a gasket out of the back of my notebook and sprayed some gasket spray and been working like a charm ever since.
Posted on Jan 04, 2010
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