dewalt d55141 compressor

[wedgefield]

The compressor is a couple of years old. The compressor runs fine, but sometimes after it runs up to 150psi and the compressor kicks off, the air will leak down until the kick-on threshold. Sometimes the air will stay in and sometimes not. The leak is somewhere right around the compressor (inside the black box).

It seems like a check valve somewhere is sticking intermittently, but I'm not sure which one and/or where.

Has anyone had any experience with this, or know which part I need to replace? Thanks.

[Tinkerdave]

Hi Wedgefield, Most of the time its Part Number: D27022 check valve that does not seal all the time.Check that first. Hope that helps.
Tinker

[Stryker223]

My compressor does that every now and then and the reason for it is not the check valve! The aluminum tube that comes off the pump is so slick, the rubber hose slides off it no matter how much clamping pressure I put on it. I just have to remove the pump unit and slide the hose back onto the tube and clamp it back on and I'm good for a few months. The next time it happens I think I might try some super glue, lol!
Take care
Michael