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It's been awhile since I owned a Ford with AC in it.
My 72 has AC, and a broken line going to the dryer.(Dryer is on top of the condenser.)
So before I go and get this fixed, I've been hearing Horror stories on how much it is going to cost me to get the system charged up again. I know that R-12 systems cost more to do, but the prices I've been hearing make me want to tear it all out.
I would go ahead and retrofit it to 134a... It is so much easier to get it... I had to have custom hoses made for my '71 (150$) and replace the expansion valve (80$ if you can find it). I added a new drier, rebuilt compressor (from autozone ~100$) and cleaned the cores to finish the deal. I cleaned the cores with denatured alcohol (worked pretty well), put the system back together, pulled a vaccum for about 6 hours, and charged it with 134a. Being a backyard mechanic I just charged the system by the feel of the line comming out of the condenser This worked pretty well for me, just had to top up the system every summer and it kept me cool in 100+ weather in Texas. I did have to add an electric cooling fan in august of the first summer, sitting in traffic would bring up the temp with the a/c on.
to repeat what the others said. I got my 71 a few months ago.
Took the evaporator out from under the dash and cleaned all the
mud dauber nests out of it. Then found both the hi-pressure and lo-pressure lines had holes in them. Mine attached with hose clamps so all I had to buy was some hose. I went ahead and replaced the drier.
Then took it to a buddy who does A/C work. He charged me a little less $20 to put the 134 fittings on it, evacuated it, and put in about 4 lbs of
R134 ($16). It's still blowing cold air and cost me about $50 to get it all working. I ordered a fan shroud but I haven't put it on yet though we are starting to see some hot days here in Texas.
Thanks for the replies.
I took the truck to a friends shop today to have the oil and tranny fluid changed. While I was there he asked me if the air was working, I said no, and he called up a friend of his.
This guy told me to replace the reciever/dehydrator (since the line to it is broke and has been exposed for who knows how long), get a new line and some AC oil and he'd hook me up with the R134a.
It's one of the "Deluxe" hang on systems and I'm in a better mood now that I know that it isn't going to cost me an arm and a leg to be able to keep it.
Saw an ad in a auto parts magazine advetising a product called Durakool (SP?). Says it is a direct replacement for R-12. Any one used it? Friends have changed to 134 and all say it works. When my current stock of R12 is gone, I will switch too.