AC Compressor / System 4.8i

[gregg3gs]

Hello All,


My 08 e70 is starting to develop AC Compressor issues (140K miles)
It still works but the barring or clutch is starting to squeak like a failing pump does.

From the manuals I see it is easy to replace (or so it seems).
BMW Workshop Manuals > X Series E70 X5 4.8i (N62TU) OFFRD > 2 Repair Instructions > 64 Heating And Air Conditioning > 52 Compressor > 3 RA Removing And Installing_replacing A_C System Compressor (N62TU)

My plan:
- I plan on having local shop evaluate the system
- next I want to replace the compressor (and maybe a dryer as well)
- from what I read you should not drive the car until you refill the ac system, I wanted to drive to the mechanic to get the system refilled

Here are few questions:
- is there something I can do to fill the AC system temporarily?
- is there a chance I can drive the car with AC belt off?
- is there a diy that maybe I missed?
- if the system is working: do I have to replace the dryer?

All your input is greatly appreciated.