Should this be loose ?

[enamel 35]

Sorry didn't know where else to post this  

 

But the is an air compressor. This is the main air feed line to the manifold and stuff. 

I haven't loosend it either. 

Reason I took it apart is I can hear a slow leak. I did soapy water on manifold and lines I could see,but the sound was coming from in the case so figured pressure switch. Then found this. I just assumed it shouldn't move. 

 

[JCM 8,651]

What does the opposite end with the blue tape look like. I have never had one apart but it might be a flared connection because of the operating pressure ?

[enamel 35]

1 hour ago, JCM said:

What does the opposite end with the blue tape look like. I have never had one apart but it might be a flared connection because of the operating pressure ?

 First pic is blue tape end. Other pic is what goes into head. 

[lynnmor 6,787]

Of course it should be tight, most of the cheap compressors make no provision to deal with the vibration.  A good compressor will have a coil of tubing that will flex to allow for the vibration.

[gwest_ca-(File Mod) 10,499]

Looks like the air intake. Should be tight with an air filter on the other end.

[Kenneth R Cluley 480]

That is like a ferrule that compresses on tube when tightened. Fault usually occurs at edge of ferrule, cracks. Check inside tube and you may see crack. Another trick is to shave a little off of end of tube to allow it to tighten a little more and seal. Think file or hack saw, doesn't require much taken off.

Edited September 28, 2023 by Kenneth R Cluley

[enamel 35]

6 hours ago, lynnmor said:

Of course it should be tight, most of the cheap compressors make no provision to deal with the vibration.  A good compressor will have a coil of tubing that will flex to allow for the vibration.

 Guess dewalt didn't want that tube lol 

[enamel 35]

5 hours ago, gwest_ca said:

Looks like the air intake. Should be tight with an air filter on the other end.

Other end feeds the tank. 

 

[enamel 35]

OK,i put it back together whith out its case. Now I don't hear the leaks. I did remove the pipe and reinstalled it. So is it possible over the time of use the nut loosend up a tiny bit? Causing the leak. 

There is a clamp on the pressure switch also. 

[enamel 35]