r12 - r134 conversion
06-22-2005, 10:52 AM
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r12 - r134 conversion
what all is needed to do this... and what does each replacement part do for the conversion.
I work for an automotive supply company that I can special order from... trying to come up with a kit here that can benefit all of us if there isn't already someone doing this...
I work for an automotive supply company that I can special order from... trying to come up with a kit here that can benefit all of us if there isn't already someone doing this...
06-22-2005, 12:30 PM
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The only thing you "have to" do is the service ports
Pep Boys sells an adapter kit that changes the R-12 screw on fittings to R-134 quick connects and a fill hose and bottle.
The things you "should" do is replace the Orifice Tube, dryer and all the o-rings and then pull a vaccum on the system for 10 or 15 minutes to drain out the old system.
Additionally Castrol (or DuPont - I can't remember) has a chemical flush that you blow through.
It's going to be tough to make a one size fits all type of kit.
The things you "should" do is replace the Orifice Tube, dryer and all the o-rings and then pull a vaccum on the system for 10 or 15 minutes to drain out the old system.
Additionally Castrol (or DuPont - I can't remember) has a chemical flush that you blow through.
It's going to be tough to make a one size fits all type of kit.
06-22-2005, 12:38 PM
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TSB
There is a TSB that lists a kit for the conversion and says which compressors are compatible. IIRC when I looked up the kit it was like $300 and included more than just new fittings.
06-22-2005, 08:35 PM
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You don't have to change o-rings if you don't disturb them.
As it turns out, the mineral oil used in R12 systems seeps into the old o-rings and provides extra sealing. That was something that surprised the entire industry when discovered, a few years after retrofits began.
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