Sure it is done all the time. Just unscrew it and fluid will start dripping out. then just replace with the new one. Good luck.
No, there is no repair if it it clogged. Replace it.
Yes, unless the converter is clogged there is no reason to replace it.
My car is going through the same issue with the A/C. You CAN replace the compressor clutch without replacing the compressor, but the caveat is that you can't tell if the compressor is any good without a clutch. So basically you are gambling that the compressor will still be good by only replacing the clutch. Hope this helps!
yes if the unit is not baked
No, they are a matched machined set.
no
Replace the bleeder valve. On vehicles equipped with a bleeder valve it is imperative you use the bleeder to remove trapped air. No other procedure will remove all the trapped air. On cars without a bleeder, you simply remove the radiator cap and start the engine. Watch until all air bubbles have escaped. This will not be sufficient on your car. Failure to remove all trapped air, will lead to a hot spot and possible engine damage.
It is possible to replace the air conditioner clutch without replacing the entire compressor if you can find somewhere that sells just the clutch assembly and can get the appropriate tool to remove the pulley to get to the clutch. Try buying a repair manual and looking in there.
I would suggest you take this to a professional. The sensors may or may not need replacing. If they do and you replace the air bag without replacing the sensor, the bag may deploy prematurely or not at all in an accident. This is not a DIY job.
Yes. Ideally it would be the same style and weight as the old one.
You can't bleed it any other way, you have to bleed it through the bleeder valve to get all the air out.
The best way is to open the cylinder bleeder and let gravity work,when fluid flows without bubbles close the bleeder.