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Les Royer 
Orange Level
Joined: 25 Dec 2014
Location: Carson, Iowa
Points: 5593
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 Topic: Its a little hot here
Posted: 15 Jun 2020 at 3:10am |
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And my old 92 Ferd needs some more R12. Of course theres none of that around anymore but im seeing this suff called 12a. Anybody been down the road with this stuff? Does it werk, or do i go the 134a route? Either way im looking at a new dryer and expansion tube.
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I still gots my A/C but it's clear out in the barn now.
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shameless dude
Orange Level
Joined: 10 Apr 2017
Location: east NE
Points: 13607
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Posted: 15 Jun 2020 at 3:33am |
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stay home where it's cool! i haven't been around or heard about the 12A yet. most all my stuff has the 134A in it. it does fine. glad to see you back again...need you back more often...i promise i won't poke you to bad for a couple days. still gots my wagon?
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mhankins
Silver Level
Joined: 19 Feb 2019
Location: Arkansas
Points: 134
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Posted: 15 Jun 2020 at 6:59am |
I'd do the 134,but with a caution. Ford compressors had powder coated internals and that coating would wear off over time and clog things up in the orifice and and dryer. For some reason the 134 seemed to make it happen more often.Don't know if it was the refrigerant or the ester oil you have to use with it. Flush the system out thoroughly what ever you use.
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Dave H
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Joined: 11 Sep 2009
Location: Central IL
Points: 3591
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Posted: 15 Jun 2020 at 8:08am |
Les, in the past when I helped folks out that had R 12 systems, I used a product called freeze 12. Check it out. It always worked for me in the 12 systems.
Let us know how it worked out.
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desertjoe
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Joined: 23 Sep 2013
Location: New mexico
Points: 13729
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Posted: 15 Jun 2020 at 9:09am |
Well,,Les,,it sure GOOD to hear from you,,it sure been a long time, it has,,,, I have not heard of any product out there that replaces the old R12 except for the R134,,,not to say there isn't,,but be careful bout putting anything other that the approved R134 as you'll prolly get into issues with warrantees on the rest of the parts of the system and such.
IF the system had been workin with the R12 and is just low,,,,That's good! I would evacuate the R12 , then replace at a minimum, the dryer, and orifice tube (or expansion valve) and flush the whole system especially the condensor,, as that is where all the gookies wind up and and if it is some plugged up the whole system will prolly not work and will most likely cause the compressor to fail bucking so much back pressure. You'll have to get some of the special oil for the R134,,but it not expensive,,,  KEEP IN TOUCH,,,Ya hear,,!!!
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Ray54
Orange Level Access
Joined: 22 Nov 2009
Location: Paso Robles, Ca
Points: 4760
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Posted: 15 Jun 2020 at 1:15pm |
The 12a worked well for me in the Gleaner combine. The up town air conditioner fixers poop poop it. But that is cause they are to catch all the juice when they open a air system up. If they don't know about it,it contaminates their machine and the other juice they have in it.  And the 12a stuff is very flammable cause it generally has some propane in it. But with all net and the reporting of all things bad, I have never come across a story of the air conditioner fluid being the cause of a fire. But gas and diesel fuel are not that good if your ride is on fire ether. 
But not knowing how easy it is to find 12a today and the price difference of it from 134a may be better to move on to 134a. But since there is a newer than 134a stuff being used maybe skip all the in between and move all the way to the newest. But I know NOTHING, "NOTHING" about this new stuff. And I have no working air conditioning in anything other than my Wonderful s car. But the combine would if I where going to sit in it. |
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Ted J
Orange Level
Joined: 05 Jul 2010
Location: La Crosse, WI
Points: 18943
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Posted: 15 Jun 2020 at 2:22pm |
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HEY,,,,,,,, HI LES!! Can't help ya with any of that r12 stuff, but just open your windows and just drive faster. I know, it works......
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"Allis-Express"
19?? WC / 1941 C / 1952 CA / 1956 WD45 / 1957 WD45 / 1958 D-17
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Hubert (Ga)engine7
Orange Level
Joined: 12 Sep 2009
Location: Jackson Cnty,GA
Points: 6498
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Posted: 15 Jun 2020 at 5:52pm |
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Got two with the R12 systems that are not working, IF I fix them I will switch over to R134. I used Freeze 12 in one and it worked okay for a while. got a clogged expansion valve now.
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Just an old country boy saved by the grace of God.
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JW in MO
Orange Level
Joined: 16 Feb 2010
Location: South KC Area
Points: 2670
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Posted: 15 Jun 2020 at 6:26pm |
If you can find the HC-12a, use it, it is compatible with all the hoses and seals, I would start with an 80% charge, add more if needed. The propane additive, (very small amount), is to keep the oil moving through the system which was no problem with R-12. As for flammability, 12a has to get over 850 degrees to burn because the main component is isobutane mixed with a few other hydrocarbons. Bear in mind, any refrigerant is flammable if mixed with oil and at the right temperature.
Hubert; refrigerant is an excellent cleaner and degreaser, many electronics are dipped in boiling refrigerant to clean off assembly contaminants such as oil from human hands. You can probably remove the cone shaped screen, clean it, reinstall, vacuum and go again, that screen protects the valve.
Edited by JW in MO - 15 Jun 2020 at 6:32pm
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