73-87chevytrucks.com
73-87 Chevy _ GMC Trucks => Interior & Equipment => Heating, Ventilation & Air Conditioning (HVAC) => Topic started by: ken4444 on May 31, 2018, 08:56:36 pm
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See the pic below of my high pressure service port fitting. I honestly don't know what year this is from, but it could be from a 1988 Suburban which is where my C10 drive train and interior parts came from.
1) I believe this is an older R12 service port. The 134a hose fittings are too large. Is that correct?
2) I assume this particular port is NOT removable? It has no hex fittings, but I have not tried to unscrew it.
3) Can anyone point me to the correct replacement part (maybe the metal whole line) with a 134a service port? This tube runs between the bottom of the evaporator and the condenser. It's very roughly "U" shaped and maybe 2 feet long if you straightened it out.
I need to replace the orifice tube and thought I should replace this part with a 134a part since I'll have one end disconnected anyhow.
(https://imgur.com/PS1OAhW.jpg)
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Well after a few more minutes of poking around I found this:
"ACDELCO 1533072 A/C Refrigerant Hose"
https://www.rockauto.com/en/catalog/chevrolet,1988,v20+suburban,7.4l+454cid+v8,1408711,heat+&+air+conditioning,a/c+refrigerant+hose,6900
Based on other photos of the same part, it's the same R12 service port. So I may be out of luck in trying to find a 134a version of this part. Probably it doesn't matter, or I can get an adapter to convert the port to a 134a size fitting.
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R134A Retrofit fittings are about $12 bucks for a pair with service caps from your auto parts stores.
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As Vile said...you don't find a hose with R134a fittings, you get adapter fittings to go from your R12 to R134a.