Tom, Compressor holds 6 oz from factory and with the long hoses you add 2 more oz's. If you drain the compressor you will see how much to put back but don't go over 6 oz. Normally 2 oz stay in all the other parts. 8oz total in the whole system. John Hervey www.specialtauto.com www.deloreanautoparts.com http://www.specialtauto.com/delorean-parts/images/compressor-oil.jpg -----Original Message----- From: dmcnews@xxxxxxxxxxxxxxx [mailto:dmcnews@xxxxxxxxxxxxxxx] On Behalf Of Tom Tait Sent: Friday, June 15, 2007 7:10 PM To: dmcnews@xxxxxxxxxxxxxxx Subject: RE: [DML] Re: AC compressor rework Ahh yes - I did mean a stock orifice tube, not expansion or VOV. I am also taking your advice on the compressor, it ain't broke so... Thanks for the kick to the forehead there. I do have the tools (not the compressor ones, but that is moot) including a proper vacuum pump, manifold, gauges, etc. I've purchased a small stash of R12 (I have the IMACA license) and will attempt to "donate' the Freeze12 properly when I initially evacuate the system, but I know it has a blend of old R12 and freeze12 in there right now so I'm not optimistic that I'll find any takers there, no one wants cross contaminated gasses. I'll likely get an old spare tank, vacuum it down and pump the gas into it and save it till the next hazardous waste turn in day. My intention for flushing was dual fold though, certainly there may be contamination, but also I have no real idea how much oil is really in the system today, much less how much more I will need to add when I replace one hose, a hub and the accumulator, so I thought I'd punt - flush and refill. What's your advice there? ________________________________ From: dmcnews@xxxxxxxxxxxxxxx [mailto:dmcnews@xxxxxxxxxxxxxxx] On Behalf Of David Teitelbaum Sent: Friday, June 15, 2007 6:54 AM To: dmcnews@xxxxxxxxxxxxxxx Subject: [DML] Re: AC compressor rework I understand your plan better now but I disagree with some of it. I agree that you should replace the condenser hose. Once you remove it you will be able to tell how contaminated your system is. I also agree that you should replace the accumulator. Your system does not have an expansion valve. It uses an "Orifice Tube" unless it has been modified from stock. If the system is contaminated you should replace it. I still disagree with replacing the compressor. The oil should be removed and replaced but if it is working (and you say it is) and not making bad noises, it is probably fine. If you are staying with R-12 you probably do not need to change any of the other hoses. Pressure test the system and when you refill add leak dye. If you really want to get the most out of the system use coil cleaner on the evap and cond coil on the outside fins and tubing. It is taking a big chance using parts tht are not "right" for the car. Just because a compressor may look like it is correct on the outside, inside it can be very different. At least the compressor that is on the car now is correct. You say it is working so if the only reason you are changing it is because you can get another one cheap, but has to be modified, I fail to see the logic. If you do not have the proper tools, a vacuum pump, gauges, tools, etc, you should not be messing with the refrigerent. Do the mechanical work and then take it to a shop for the testing, vacuuming, and charging. A proper vacuum pump that can get into the micron range is expensive but you cannot do good work without it. An A/C system should only be "flushed" if it is contaminated. Usually done with R-11 or nitrogen. David Teitelbaum vin 10757 [moderator snip] 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 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/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/dmcnews/join (Yahoo! ID required) <*> To change settings via email: mailto:dmcnews-digest@xxxxxxxxxxxxxxx mailto:dmcnews-fullfeatured@xxxxxxxxxxxxxxx <*> 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/