Hey guys,

I am under the impression that I must have a vacuum in the system before charging. I am starting off with a "just flushed" system, new oil in pump and new drier (7oz), new o-rings, new expansion valve. I have her in pieces now and will be assembling soon..

My question(s) are:

After I put the oil in and seal her all up, do I then apply a vacuum to the system to evacuate air / moisture? If so, does this look like a good device to do so: http://cgi.ebay.com/Air-Conditioner-Air-Vacuum-Pump-Air-Vac-Gas-A-C-AirVac_W0QQitemZ110130632023QQihZ001QQcategoryZ22664QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

How much vacuum should be applied / how long should It be applied?
How much vacuum should I leave in the system?

Ps. I have a new mighty vac with gauge just sitting there..


Thanks gurus!

__________________
Thank you for all the help guys!

"Old Gretchen" <--1983 300SD w126 cali. emissions (so it says on wdw sticker)
LIght metallic blue with dark blue interior. Odo stuck at 160,500 mi.

www.handydo.joolo.com