This should be the type with an allen bolt in the center ( 8 MM I think, if not that 10 mm )

If you have an impact wrench ( air or electric ) you can give it a hit with that and it will come right out. If no power tools, use a strap wrench around the pulley.

The shavings are likely coming from another source. The typical fan clutch failure is the bearing failing and fan staying engaged at all times.