Actually it SHOULDN'T spin freely. You should be able to feel some drag from the silicone fluid when you spin it. If it spins freenly that means all the silicone fluid has leaked out and the fan won't be able to move air effectively.

__________________
"It's not about how fast you can go, but how well you can go fast."

Bob in Richmond

'97 S320 (LWB), Ruby Red Metallic, 73k miles
'97 S420V, Smoke Silver Metallic, 155k miles