200tdi crankshaft pulley

Hi
A couple of days ago i noticed the pulley on my 200tdi had a slight wobble to it, then the day after my power steering went heavy and when i got home i took the front of the car apart and the keyway on the crank has chipping to it.

i was woundering if anyone else had this problem and can it be repaired.

i did use the search but did not find anything.

any help much appreciated

Dan