AC Leak

[dpevans]

Has your system been retrofit for R134 ? They use different service side, but are sae base thread, if applicable for older systems. You may have to look in the retrofit package parts.

I didn't think about this. The previous owner did convert to R134 but never mentioned changing the lines, although that would make sense. I'll look into it, thanks for the idea.

 

[dpevans]

apparently, your truck has been converted from R12 to R134a as the fitting you show in the picture is for R134 a
Is it leaking from the thread where it screws in or is it the Schrader valve leaking inside the fitting?

It's leaking from the Schrader inside the fitting.

 

[GoToGuy]

Is it an actual shrader fill valve or is it like a black check ball?
The shrader you can change like tire valve, but use a an AC shrader. The black or silver ball you change the whole fitting.

 

[caminonut]

It's leaking from the Schrader inside the fitting.

If that’s the case, you can take the Schrader valve out, clean it with brake clean, dry it and then put some 134 a oil on it and reinstall it to see if it stops leaking, or just replace it with a new Schrader valve.

 

[dpevans]

If that’s the case, you can take the Schrader valve out, clean it with brake clean, dry it and then put some 134 a oil on it and reinstall it to see if it stops leaking, or just replace it with a new Schrader valve.

That was my first thought, but the shrader was flat on top and didn't have the tab that they normally do to unscrew it.

I never found a fitting so I ended up just replacing the whole line and the AC is working now.