lets see. 95 GMC vandura 3500 w/ 454 engine.  problem: i think my air
conditioner compressor pulley bearing is going bad. its making a fairly
loud metallic whirring noise with the engine running and feels like its
not lubricated when i spin it by hand altho it spins freely.
  i saw a exploded view of a compressor unit that had a nut holding
the clutch hub on. mine doesnt have a nut, but i do see a "key" in
there.
i have a few questions i'd really appreciate the answers to:
 (1) can i pull the hub off with a gear puller? is that how its
designed, just pressed on or should there be a nut there and its
missing?

 (2)  are there any internet sites where i might find an exploded view
of my air conditioning compressor?

 (3) i'm not averse to just pulling the entire compressor assembly out
and replacing it with a "dummy" pulley. sorry, i dont know the proper
name.  i assume such an item is available. is a dummy pulley a standard
item i can find at autoparts stores?   i dont think i'm  ready to try
to replace the compressor at this time. i need to be on the road soon
and will have more time later.

btw, i'm rather surprised "they" design a car that cant opperate just
because an air conditioning part broke.

i hope i get some replies. thanks. (and i apologize for the fake name).
john