2010 Mazda 6 A/C Compressor Replacement

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Mazda Protege5
The A/C compressor on my 2010 6i is getting noisy. A/C still works fine. I can pick a used one with a 1 year warranty for $75. I'd rather do that than deal with a new Chinese one crapping out on me in 6 months.

Is it as simple as evacuating the system, removing the serpentine belt, disconnecting the lines, and removing the compressor from the engine? Anything else that needs to be removed?

I'll replace the expansion valve and receiver/drier (if I can get to it easily) while I'm at it and flush the lines from the compressor to condenser, and condenser to evaporator, and evaporator to the compressor. I'll also get an inline filter. I'm not planning on replacing the condenser since that appears to require a lot more work.

What type of oil does it take and how much? I haven't found a clear answer on this yet. The newer Mazdas appear to take PAG100. And, how many ounces?

Any other words of wisdom?
 

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