Pontiac Repair: 93 Grand am Water Pump 2.3L SOHC, drive sprocket, bad water

Question
Well here we go.. I replaced a bad water pump (Barring was shot) on my 1993 GA 2.3L SOHC and when I got it all back together it still sounded like I had a bad barring. So' back apart this time removing the timming cover and pump. I also removed the timmimg chain from the water pump drive sprocket and there it was..Another bad barring on the drive sprocket......This is where I get lost....I cannot find any info on how to remove and replace the water pump drive barring....I have removed split ring from the spline side but cant get it to budge. Please help  

Answer
not real sure on this one but you can purchase a puller to get tough bearings out.more than likely the bearing is just in there good.i would call the dealership for replacement.they can usually get those hard to find parts.replacement will be reverse of removal but usually easier.