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Originally Posted by gogo911
The pump should have fresh oil in it (read as it should be flushed after each pump down) as it will get contaminated doing a pump down. You can pick some up at an auto parts store. Also, there are some good "how to" articles out there.
I have most of the gear (pump, gauges) that were my father's (for residential work) but not the r134 conversion fittings for the gauges. I have not had a need to convert anything nor do any A/C work
By the way, you have to be careful when charging your system with the new r134 as the volume you'll need to charge it is not the same as what is needed to fill it using r12 (I.e., it is not a 1:1 match with r12 as you will need more r134 or the other way around, i forget now). If you don't know this already, you'll see it mentioned in some of the how to articles.
Good luck.
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I have the adapters to convert the R12 lines to the R134 fittings. The figure for the conversion is R12X.8=R134. I use the formula of R12X.9=R134 this will compensate for line loss. No additional thinking is required.
Let me know if Ya'll need the adapters.
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