03 4.7 Durango - AC System

Messages
22
Location
Kentucky
I'm replacing some AC system components on my 2003 4.7 Dodge Durango with rear Heat/AC controls. I have already replaced the expansion valve and drier. Now I am replacing the compressor. I am unsure of what is the proper amount of R134a to charge the system with. I am also unsure of what amount of oil I need to add to the system. As I've already replaced the drier, I can only assume there's an ounce or so of oil inside there, along with a residual ounce or so inside the condenser, and let's say another ounce in the evaporator core. If the specs call for a total of 10.0 ounces, would I be safe draining the new compressor, pouring in 7 ounces, and the pulling a pre-charge vacuum? Or should I simply drain the OLD compressor to reference how much oil needs to be in the NEW compressor, and then drain/add to the new compressor accordingly? Lastly, does anyone have access to the specification for the correct oil and refrigerant capacity for my vehicle? My underhood sticker is missing.
 
Messages
55
Location
WI
I just did my Durango too, and if memory serves it was 2.44 pounds of R134a, or 3.25 of those 12 ounce cans. I didn't replace the compressor so I don't know about the oil off the top of my head.
 
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