Ac questions.

[Dkdesposito]

Hey guys! New to the forum, I am workin on my '01 Tahoe and I've replaced the air conditioner compressor and accumulator along with some rings etc.. anyway I'm getting ready to put it all back together and couldn't find a solid answer about when and how to add the oil to the compressor and accumulator. Can I just hook it all back up run a vacuum on it for a few hours then fill it with oil through the same valve I fill it with the R-134A or do I pour it in the compressor and accumulator then hook it all up back up and run a vacuum??
Thanks in advance for the help