Craftsman air compressor part ID help please

[bmoparmofo]

Hi, I have a Craftsman four horse 25 gallon air compressor.
It's from the late '80s or early '90s.
It's had a leaking regulator for quite some time so I thought I would replace the regulator finally.
It was brutal trying to get it off of there, the brass ended up stripping and it turned into a vice grip experience.
The threaded part is what was in the regulator side of things, but the other part that goes towards the compressor engine side looks like this.
Not sure what this part is called to replace it?
Also not sure it was really designed to come out of the compressor engine side?
It was tight but seems questionable that it wouldn't have been threaded?
It seems like it would have to be held in there fairly well with the air pressure behind it for safety sake?
I'll attach a picture of the part, I appreciate any help. Thanks!

 

[johnre]

If that's on the compressor pump side of the unloading tube, it's just a fitting that connects this tube into the compressor head. The leak you had was likely in the regulator unloader system, which is normally sealed off during pump operation but open to the atmosphere whenever the pump shuts off so that it releases the trapped compressed air off the heads for an easier start next time (this is the hiss you hear when he motor cuts off).

Here's a diagram from something likely resembling your compressor from that same era; it's #11 in the diagram and Sear parts lists it as either SS-8553 or SS-1215. Devilbiss built this for Sears during this period if the model number begins with "919-".

It would help if you had the full model number of the compressors; many of these manuals are available free online. That's where I got the image below.

Obviously, you can't get this part from Sears any more, but it's a common enough repair part that you can probably get generic replacements online.

 

[The Cobbler]

some more pics of where it was and what connected to it, but it looks like a fitting to connect to the tube . it may be easier to re plumb some things. snap a few pictures of where it goes .

 

[bmoparmofo]

Hi, thanks for the replies. I'll attach a picture of what attaches to the other end would be the part that goes into the regulator. It threads into the regulator but it looks like it just pushes into the other part where the O-rings are on that end. Still can't find the actual part to get a replacement. And it is a late '80s early '90s compressor so I'm assuming it starts in 919.
It's on the right gauge but I have the regulator off of it at the moment. Let me know what you think if anybody can get a part number on this thing. I appreciate your help!

 

[The Cobbler]

is it where the coupler for connecting hoses attaches ?
take a shot back a bit so we can see more of the area

 

[bmoparmofo]

The hose would connect to a coupler that attaches to the regulator. This piece is what you see on the right hand side but the regulator would thread on to that and then on the other end of the regulator would be the coupler that the hose would attach to

 

[bmoparmofo]

The only other picture I have at the moment, is where it still had the little plastic cover over it but you can see where the hose would screw on on the right hand side and then there's the regulator and then the piece going from the regulator towards the compressor is the one that I'm trying to figure out

 

[johnre]

I think a hose that runs into the regulator can only be a part of the unloader system.

Is this fitting hollow in the center, i.e. no check valve or anything like that in it?

Offhand by the scale of your photos I'd say it's a brass 1/8" male NPT to 1/4" male hose barb fitting.

 

[The Cobbler]

I still can't really make out what you have. it looks to me like it's where the air hose would connect . is the pc by chance part of a coiled hose that was connected ?