[V8] TB /stuck on replacing seals

[John Dodd]

I managed to put a new water pump in (Graf) and I'm stuck at the
"replacing of seals " stage.
1. I cannot remove the small sprocket  that holds the vibration dampener
to change the crank seal. It has some green stuff on it so it must be
some loctite product.
    The manual does not mention removing the sprocket just the seal
using some special tool.
 
2. I removed the sprocket from the oil pump (not sure if it's necessary
) and pulled out the 3 bolts holding the pump bearing. Is there a seal
behind the bearing ?
    thanks
John