Hi there,
I've successful convert many R-12 system to R-134 with no problem. Many folks giving it a bad rep because they wouldn't take the time to do it right or lack of knowledge how the a/c works. This vehicle actually designed for R12 so it will work much better with R-12 but where can we find R-12? The gray market? We have seen 104 degree here in the Dallas, TX area the past week. I've convert a couple of them last week, air blows 28 degree out of the vents in 104 degree temp. Here are some tips:
- Flush the system
Flush the system, actually..?? Or do you really mean pump it down to a HARD vacuum..?They sell the flushing chemical at any a/c supply outlet. What do you mean why pump it down to a HARD VACCUM? Is this how you flush the system?
- Replace all the 0-rings and lube them up with oil
Why...?? My seals have worked for 150,000 miles... And with what oil...??Once you open up the lines, It's wise to replace the 0-rings. We had a quite a few 0-rings after the convertion.
- Use the right oil for your a/c system
Wouldn't the "right" oil for the system mean being compatible with the original R-12..?? Would be surprise what kind of oil people will put in the a/c system.
- Replace the drier once the system is open up
First pump it down to a HARD vacuum, undoubtedly removing ALL the H2O, and NOW remove the drier..? Why? Since you asked me this question, I don't think you ever work on an a/c system before
- Recharge the proper amount of oil
Doesn't the commercially packaged for retail R-134 come with the oil mixed in...??Nope
- Recharge the proper of R-134(usually 10-15 less than your R-12 system)
Or simply recharge to the level that results in the proper low side pressure, ~40 lbs, as directed in the DIY kit..!
- Last but not least converting the system isn't cheap. Bring it to someone has the knowledge. Pay for the reapair Once not Twice!!!
$50 for the DIY kit including 32 oz of R-134, ~$100 for a reputable A/C specialty shop to do it. Key words = REPUTABLE & A/C SPECIALTY SHOP...!
JP Importz