LUVTruck.com

Ac blows....kinda cool, but nowhere near cold... and t's fixin to get hot down here.

Here's a subject I know didly squat about, air conditioning. I understand the basic operation and components.

Situation: it apears a previous owner attempted or began a r134a conversion. While poking around I found the collector/dryer is an Atco 7-5144 originaly made for 83+ Chevy's, and the sticker on it says use r12 or r134a.

Looking at the compressor, a friend of mine tells me the fiting is not r134, so, I pressed in the valve stem pin and a little air came out, not like a whole lotta pressure but like a bicycle tire.

What I am wondering is, should I assume it is r134a and get a recharge kit & hope for the best? Is there way to tell which type is in there? Or do I need to have the system purged and vac'd first?

As for the recharge kits, anything in particular I should look for?

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FIAA: Color Guard

I would doubt it is set up for R-134. I have a hunch that he could not find the correct receiver/dryer so bought a universal type. I would have it evac and Vac tested for leaks before recharging.

Something I hate to hear is "it just needs freon added". My answer as a mechanic that has done 100's of A/C repairs is "where did the freon that was in there go?". Freon does not wear out, and will not break down.

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Certified pilots, looking down on people since 1903.

Thanks for the info, speaking of recharging, where is the valve on a Luv?
High and low pressure sides?
I found one on the backside of the compressor.

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FIAA: Color Guard

Thanks Johnboy. you da mang!

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FIAA: Color Guard

Got 'er done. Blowing cold air, just in time today was about 87* 90% humidity.

Wanna thank yall for the info again, and a big thanks to Ben for getting this sight started. I keep thinking, if this site and info had been around 23 years ago, I'm sure I would still have that black 77 Luv

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FIAA: Color Guard

So I finished the AC job, and like a responsible owner, I fill out the conversion info sticker and go to stick it under the hood. Well I noticed there was a rather faded one identical to the one I was sticking on. My guess is the previous owner did the conversion adapter, then for some reason removed it later.

It's all good now though.

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FIAA: Color Guard

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1978 pro street step/side 455Buick, 4sp,4.11s, 31/18.5s