Sorry, it's an 05 and I totally meant CRANKshaft sprocket. I had just typed a guide for changing camshaft seals so that's probably why I had camshaft on the mind. That's what mine looks like exactly.
Basically what I am saying is if I have the pulley bolt and belt off, but leave the sprocket on the crank I can slightly rotate the gear on the crankshaft. The crankshaft does not move, just the little gear has some rotational play to it.
By shear pin you mean the metal notch on the inside of the sprocket that sits into a matching grove on the crankshaft right? If so this is where I have play, it's almost like they don't fit together perfectly. The play is very minute, but enough to make a clicking noise if I jerk it rotationally with my hand. Is torquing the pulley bolt down going to remove this play or do I have bigger problems?