Dewalt D55146 used air compressor

by Matt
(Antioch IL)

Hi everyone, I just recently bought a used Dewalt air compressor and I am fairly new to using them.

The problem I have is that when I turn on the compressor the regulated pressure spikes to around 215 or so, gauge only goes to 200.

I try to adjust it down and I can hear air leaking out of the pressure valve and at the same time the tank pressure will not go above 155 or so.

At least I have not let it because the other pressure gauge read 215. Any ideas or suggestions you may have would be greatly appreciated.



Bill says...

Matt, if the tank pressure is 155 PSI, then it's unlikely that the pressure at the regulator is 215. Your regulator cannot increase pressure, it can only reduce pressure below what ever the supply pressure is.

If it were me with your problem, I'd spend the $10 or so and replace the gauge on the regulator. That may be all the problem is.

If that doesn't solve the problem then the regulator might be failing but, I say again, if the supply pressure to the regulator is 155 PSI, which is what the tank pressure is, the regulator cannot be either experiencing or setting the downstream pressure to 215 PSI.



Comments for Dewalt D55146 used air compressor

Click here to add your own comments

Mar 06, 2011
thank you
by: Matt

Thanks Bill. I will replace that part in the coming week and let you know what I find. Thank you again.


Click here to add your own comments

Add your own question or comment. It's easy to do. How? Simply click here to return to DeWalt Air Compressor Issues.