I looked at the vacuum device you pointed out. I had to go to robinair.com to get the specs on it though. It will only pull to 29.7" mercury. This is enough to remove the refrigerent but nowhere near enough to pull a deep vacuum of micron range (you want to get in the 400-500 micron range to boil out all of the moisture). Go to robinair.com and read all about evacuation of A/C systems and why you want to remove as much moisture as you can. Generally there is no substitute for quality tools, the vacuum pump I use is a robinair but not the air operated one! In many cases it does not pay to get the tools for a particular job unless you use them often. For instance I do not have a tire changer, balancer, exhaust gas analyzer, or alignment rack. This equipment is just too expensive unless it is used often, it is much smarter to find a shop that has good equipment and KNOWS how to use it properly. For most people A/C work is best left to profesionals who can afford the best equipment, deal with all of the paperwork and legal requirements. There is also some level of danger in handling the high pressures and the refrigerent so unless you know what you are doing it is safer to take it to a shop. I do not want to discourage anyone from working on their cars but some procedures are best left to others. For instance I would never recommend anyone trying to do their own glass work, it is just too dangerous and expensive if you damage the glass. Remember the most important thing is to work safely so you can enjoy your car. Nobody can do everything. David Teitelbaum vin 10757 --- In dmcnews@xxxxxxxxxxxxxxx, john fredt <hecklerkochgmbh@xxxx> wrote: > > > This isnt directly delorean realted but helpful for servicing themThere is a cheap alternative to having the shop service your air conditioning system.It is a small "air vac" vacuum pump driven by air from your air compressor.With this thing and a cheap set of gauges and hoses which can be got at most auto parts stores you can serivice it yourself.there are also kits available for flushing the system yourself which arent to expensive.The air vac can pull enough vacuum to evacute almost any system including the DeLoreans.Here is a link to where you can pick up this handy gadget-------.http://www.autotoolexpress.com/airvacforr12.html ----.It cost around $60 dollars which is quite a deal compared to the $300-$800 a regular vacuum pump costs. There are even shops who you use this thing.The cost of the air vac and hoses/gauges altogether shouldnt exceed $120.00 excluding shipping,but you should be able to find a dealer near you.The people who generally carry the air vac on hand sell to garages so it wont be a retail store.There is a set of r134 fitting adapters which should be included with any gauge set you buy make sure they are before you purchase it.I believe discount auto parts has a set right behind the parts counter hanging on a display rack near the o-rings for ac systems.If you have any further questions email me off list. > > > > --------------------------------- > Do you Yahoo!? > Yahoo! Mail Plus - Powerful. Affordable. Sign up now > > [Non-text portions of this message have been removed]