Other information:
Replacement
1.
Disconnect the negative (-) battery terminal.
2.
Recover the refrigerant with a recovery/recycling/charging station.
3.
When the engine is cool, drain the engine coolant from the radiator ...
Removal
1.
If the compressor is marginally operable, run the engine at idle speed,
and let the air conditioning work for a few minutes, then shut the engine
off.
2.
Disconnect the negative (-) battery terminal.
...