If the two parts separate it shoudn't (although still possible so don't take my word for it) snap the cambelt unless something pings off into the cambelt case, but it would cause problems with the aux belt and associated items.
The six small torx bolts are all that holds it on the the crankshaft. The big one in the middle isn't used for removing the pulley, but is used for turning the engine over manually during a cambelt change for example. You might also have a bit of rust set in between the pulley and the crankshaft, making removal a little bit difficult.
When you do get it off, and have a replacement, lightly clean any rust from the mating surfaces using a light rub of some fine wet and dry (only remove surface rust, not massive chunks of metal), and maybe a very small smear of grease. Whatever's recommended in the cambelt change DVD anyway. The pulley can be fixed when aligned in one way only. If you do it any other way not all of the bolts will go back in.
You'll have to remove some bits from in front of the engine to facilitate removal of the aux belt and then the crank pulley.
If you haven't got the cambelt change DVD from the shop, get it and watch it before you do the job; that way it will be clearer and you'll be less likely to make mistakes.
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Topic: Nackered Crank Pulley (Read 1460 times)