No need for any apologies Spike and I welcome any advice and really appreciate your time in trying to help.I've not seen a failed aircon coupling but I assume the compressor shaft would be seized so the outer pulley rotates while the shaft is stationary.
I just had this vision of you being able to rotate the pulley with a bit of resistance and assuming it had failed.
If the shaft turns with the pulley it may still be serviceable so worth checking further before scrapping it
Apologies for a statement of the obvious
Thanks Spike,Well done.
How did you get on with the A/C compressor
A few things on this: the contents are really, really nasty so use eye protection if you try it. If you have no pressure, that certainly indicates the system has lost all of its gas. If that's the case, a pro will probably try to pull a vacuum on the system over 10-20 mins and see if there is a leak. If there's nothing obvious, they may suggest adding a UV dye plus nitrogen gas to see if the leak can be spotted and rectified. On the other hand, if it holds a vacuum, they'll go straight in with a re-gas.A quick test to see if you a regas will sort inop ac is to unscrew one of black port caps and activate the valve with a blunt instrument (lolly pop stick works great)
If you have pressure a fast jet of gas will be expelled and the system should work great again with a service/re-gas, if not then nothing will happen and your issue is greater than a service. make sure to keep body/skin out of harms way of escaping gas and be very quick as it will be clear if the system is pressurised