a/c recharge 80s c10

[glen86]

Hi I was wondering if any body has recharged there ac unit in there 80s c10 I know its a r12 system can u use the newer r134 system kits like u can get bout any where? I appreciate the response got to b cool for this summer

[bnoon]

Lots of people here on 134 charges. Nothing to it, just buy a few fitting adapters and make sure you fix all of your parts, run 134 compatible oil, pull a vacuum, then charge it.

[Tuff 1986]

Originally Posted by bnoon

Lots of people here on 134 charges. Nothing to it, just buy a few fitting adapters and make sure you fix all of your parts, run 134 compatible oil, pull a vacuum, then charge it.

Just got my A/C going on my 1986 c10 stepper.. ^^^ this is exactly what I did

[KrazyRay]

I went that route on my 87 GMC last fall and its still working great. A local ac guy told me it will work for about 1 year and then something will break. He suggested a new pump, drier, and hoses to do it right.

[glen86]

Thanks for the responses n wat do u mean pull a vacuum ?

[rudey737]

I've recently been reading up on this for my truck. The A/C has been unplugged since I bought it in September. When I plug it in, it runs, but it blows hot air. Which makes me think it needs a charge.

So, I started reading. If I understand it correctly, you will need to pull a vacuum to check for leaks in the system. If you pull a vacuum for an hour or so and the pressure in the system stays the same while you pull it and after you stop pulling it, then you have no leaks in the system.

Before you put R134 in the system, you will also need to purge the system of r12 coolant. This should be done by someone that knows what they're doing so it isn't just purged into the atmosphere. From what I understand, most A/C places either won't charge you or charge you very little for this because they're reaping the benefits of adding liquid gold, i.e. r12, to their collection.

Everything pointed out here is supposed to be the LEAST of what you do. I've read that you should change out compressors, driers, orifice tube, etc.

Here is some light reading for you. Make sure to pay attention to the link in the first sentence. There's even more reading there.

http://www.chevytalk.org/fusionbb/sh...hp?tid/168431/

[Dsquared]

recover the r-12, unhook lines at evap. core, dryer, etc, remove orifice tube. shoot some a/c flush through the system. blow out with compressed air. buy a retrofit kit for 134-a and a new dryer. install kit, new orifice tube and dryer and pull a vacuum for a minimum of 1 hour. here's the fun part. you only put 85% of r-134 in the system. for example....if your system holds 2lb of r-12, you only need to put 1.7lb of r-134. don't forget to put some "pag oil" in as well. I did this to mine except I replaced the compressor too. it's been 3 years and it still works great.