Power Steering aint good

hi all.

I have a small problem the PAS pump leaks a small amout of oil comeing out, while i was doing other bits on the old girl i noticed the pully has moved outwards by 5mm and chewed off the 1st rib of the belt.

is it another pump job or can i get a repair kit for it?

thanks for your time
baz

its a 1996 300tdi sorry forgot to add this