Aircon clutch making noise, heat
My wife's 156 started a week or two ago making a bit of noise on startup, which quickly went away. I made a mental note to sometime check the aux. drive belt system, which I promptly forgot until the noise stopped going away right away. Well, today she needed to go somewhere, which meant she needed to drive her car, so I warned her just to call me if it breaks down. :-) Right before our village on the way back she called that it had started smoking a bit! She coasted down the hill to our house though, so no roadside repairs needed!
I opened up and determined that the noise was coming from the aircon clutch, and it goes away when I turn on the A/C. The belt didn't have any visible damage, so I'm pretty sure that the smoke is coming from the A/C clutch pulley heating up due to the clutch plates rubbing when the A/C is off.
My question is: are the adjustments to be made to add a bit more spacing between the clutch plates when its off? It seems like anyway that as the thing ages/wears it should be less likely to rub when off, so its surprising that its a problem now. I've dealt with a bad clutch on my VW which I was able to change without disconnecting the compressor, but that was the more typical clutch isn't engaging problem/electromagnet bad/bearings shot... I do recall some washer going somewhere to set the spacing though.
Does the alfa AC clutch have some washer in it? Could this have fallen out? Where can I find some guide how to drop the compressor (hopefully without dischargin the system)?