I wouldn't bother replacing the O-rings on fittings you do not take apart. They will be "sealed" in a similar manner that the old A/C hoses have been over years of use. The original factory R12 charge was 2.5lbs, then reduced to 2.2lbs. I would probably put around 2lbs R134a in. This DMCNEWS tech article written by Dave Stragand has a good overall procedure to follow for long-term sucess. http://www.dmcnews.com/Techsection/r134.html It also has good recommendations on refilling the compressor with new oil. Dont forget to find the original leak, and good luck with everything! Jim Reeve MNDMC - Minnesota DeLorean Club DMC6960 --- In dmcnews@xxxxxxxxxxxxxxx, "sweetp01569" <paul.sweet@...> wrote: > > Thanks Jim, > > My compressor and clutch are OK, and believe my condensor and > evaporator are relatively clean. I ordered a new accumulator, VOV > orifice tube, low pressure cycling switch and pressure relief > valve. When I receive these items, I will make an appt with the AC > shop and request they do the flush to get out the old oil, leak test > and refill with the proper amount of R134A (which is 2 to 2.2 lbs, > right?). One other question. Should I change all the o-rings, even > for fitting or hoses that I am not replacing, or best of left alone > for now? > > Thanks again, > > Paul To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ <*> To unsubscribe from this group, send an email to: dmcnews-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/