Source for rear AC fittings?

[v30]

Cold Hose

AC Hoses, Hose Kits and Fittings, AC hose repair

coldhose.com

 

[75gmck25]

When I had my new A/C hoses built they found that GM used a larger diameter hose fitting than normal for the evaporator connection, probably because the orifice tube fits in there. The A/C shop just took two fittings of the right size, cut them apart and braised them back together to make an adapter, and then crimped it on the new hose. Only took him a few minutes.

 

[82SquareBurb]

Any tips on how best to flush my rear evaporator unit? I know the expansion valve is inline back there, and from what I know so far the exp valve may block the flow of solvent, my plan is to get as much of the mineral oil out as I can. May just undo the fittings and flush it separate from the rear lines. Also wondering how to retrofit the rear hard lines that span the length of the truck, I am thinking I may need some weld on O-ring male fittings, then just have an end on the #6 and #10 hard line to the new hoses. Not sure doing a double flare to -6 and -8 AN lines would be an easier route and not leak. I have the crimper tool, and an (aircraft) flare tool, but no way to remake the hard lines with the soft hose sections. They are still good, so I guess I could roll with my 43 year old originals as well if they pass the leak test.

 

[gmbellew]

id definitely disconnect the rear expansion valve when flushing. and while it is out, throw it in the freezer and make sure it closes and operates properly.