I've searched the board a bit, looking for information regarding the air-cond clutch/pully and found little to
help me out.

I have a 2k, Z-24 with 155416km (96571Mi) on it. All service, annual checkups, are performed on a routine
basis. I haven't had any problems with it up-untill 2 days ago.

My air conditioning will not disengage, even when I unplug the connector.

Ive removed the belt, and with some effort, turned the a/c hub, feeling with the palm of my hand if the outer stays put. Understanding how electromagnetic
clutches work. With no power supplied to the electromagnet, the outer pully, should turn freely, while the centre porition stays put.

Knowing that, how can it get jammed up like this? I can spin the compressor, but even with the connector unplugged the clutch assembly is,
for lack of a better word, 'fused' together??

Im stumped... Im surprized, and I don't know if this is mechanically possible.

No damage to the belt (odd wear etc)

compressor has no excessive side to side 'play' on the shaft, and no end play either.

I remeber, when the compressor is dis-engaged the RPM sits at 650-700rpm, when I push the button it (the clutch) squeakes faintly and draggs the rpm down slightly
at which the ECU corrects all takes about a half a second, but its noticeable if you listen to the engine, and watch the tach.

Now, when I start the car cold, it goes through its open loop mode, then the rpm settles at 600rpm (like the ac is engaged) but the
h/vac controlls arent pointed at anything that would engage the AC?? (air recirculate, defrost, and any setting with the button pushed in)

Click to see -----> http://i107.photobucket.com/albums/m291/sswwissh/Compressor-breakdown.gif

Any help and or advice that would better explain why or how this is possible, please, be my guest.

thanks

From the breakdown you supplied--How about:-

1. Item 3 is secured to shaft/inner bearing race

2. Item 6 is fitted to outer bearing race

3. If bearing is seized/frozen there is no movement between inner and outer races--therefore Item 3 is locked to Item 6---!


Maybe


Alont

I thought the hub (the part that the inner bearing race slides over) was part of the compressor casing. Not part of the shaft assembly.
Looking closely, It appears that the hub is part of the shaft, and the bearing spins when the compressor is disengaged, and
is neutral when engaged.

I think Im just going to have to rip it apart...and see what the hell is going on..

As a precaution, I purchased a belt yesterday, that deletes the AC, so if for some reason I need to go and get additional parts
I don't need to take a taxi.

Ill let you know how it breaks down..