Unless you get really lucky, nos hoses are unobtainium. If you have the old line, you can take them to any good automotive ac shop and they can make them for you. They just braze the end onto new hoses. I had mine done at a local shop and it was around 250 buck for all of them. See here:

https://www.dieseltruckresource.com/...m-t313221.html

...Mark

 

 

I got most of my rebuild at O'Reillys in Bartlesville, OK. I had to go to an AC shop in Tulsa to get the one line built. They just clamped new hose onto my ends. I already had the new compressor which I bought off eBay.

I used r-134a but I wish I could afford the R-12.

Edwin

 

I welded my ends on to special Aeroquip fittings and used Aeroquip barrier hose, now I can replace the hoses easy within minuets.

You only need to know how to hard braze.

I got all of the parts from Hose Man
Jim

 

 

On my 92 I replaced all components except evaporator and hoses. Cleaned and flushed the hoses and evapcore with couple cans flush solvent from Oreillys. All parts including figure 8 gaskets from Oreilly's. Cleaned up the exterior of all the hose block fitting ends and repainted. Made sure the mating surfaces clean and smooth. Took it to local shop to pull vacuum, which mechanic said held great, charged system with 134 and running cold now. We'll see how long the hoses hold up.

 

I did all of that and more and omitted one thing, the high pressure pop-off valve went after a day or 2 and put me back to the pump down stage again.FWIW, harbor freight sell a cheapy vac. pump that runs off a compressor. A one time trip to the shop for a pump down isn't too bad, but multiple trips can get expensive. I also converted to 134A and that was probably why the pop off valve went...Mark

 

I changed every thing in my system except the hoses. Converted to rR134a in the process and it's still working good after 4 or 5 years now.