bigbaddiesel416

my A/C isn't getting cold what is the tune up procedure i am in CA where i guess you can not buy R12 to charge is this true?
whats involved to convert to 134A?
any one out of state wanna send me some R12 if you can get it?

Brice

archer39

here is an old post in the sticky.

DNRCustoms

I wonder if "Rebels" Truck is still blowing cold, it loks like he just added the 134... Hmm I need to do mine too.. Might try a make a few calls to some refrigeration buddies..See if they can scrounge up some R12!!

Yreka

I did the same thing.. I got a conversion kit from Kragen, which is basically 2 new fittings ( 134 are larger than 12) that screw ontop of the old ones, some R134 and a gauge/gun to install it. THink it was like 40 bucks.

Worked ok for me

Edit>> You do need to take the R12 out, cant add 134 on top of it.

DNRCustoms

Well I had a my condensor out when I re-did the truck, so would it be good, Or do I have to hook a air hose up and blow out the lines?? I think I will try and get the fittings and just wing it.. My buddy might even have the fittings??

Yreka

I did the same thing, removed the condenser when I had it down for paint..
I had a set of harbor freight gauges and a vaccum pump, so I ran that before the "kit" to check for leaks since the AC didnt work when I got it.

Im not an expert, but I believe you want a vaccum in the system so the refigerant has more room to flow in ( as apposed to 14.1 of air or whatver the atmosphere is)

Not sure how critical that step is..

I have heard that AC shops will do this for free, since the R12 is worth so much.

RollinCoalSmoke

Some expert a/c people say to change out the o-rings, some say o-rings and dryer, ect. I have a 1982 Pete that only had the R12 bled out "enviromental safe way" and a 12 hr. vacuum pulled on it with a old refrigerant compressor used for a vac system. That was 3 years ago and I used it today ambient temp was only 84 but it was blowing 48 out the vents. To me a/cs are a pain but I manage to fix them myself. Good luck with your a/c.

bigbaddiesel416

thanks to all whats the final charge lbs?

Crossy's son

They sell cans of R12 on ebay, the good ole stuff.

Jet100

One of our Mechanics is gonna do mine for me, but i too need to know how much he needs to put in. I suppose i could look it up in my manual.

bigbaddiesel416

please doooo

Yreka

80-85% of the R12 rating as I recall.. Mine was 41 as printed on the sticker in the engine compartment, so 41 of R12 or 34-35 oz of R134.

Here is the FAQ for the kit I used,

Interdynamics R134 kit

Jet100

The manual says after a complete evacuation of the system, you need 44 oz's of r12(2 1/2 lbs).

Yreka

Are you sure that is for the CTD's ? (again referencing the sticker), it says 44 oz for gas, 41oz for diesel.

Jet100

There isn't anything in the manual about the CTD(in the ac section) to suggest that there is any differance between a gasser or the diesel. I just read the whole section, and checked capacities, but there isn't a listing in there for the refrigerant. I'll check my sticker on my ruck to see what that says.