harmonic balancer install on 1997 Jeep Grand Cherokee

ok so i got the balancer out but i cant put the new one in i lined up the key way but the crank shaft bolt does not fit in the hole is now much smaller y? im assuming when u pull the balancer it pulls the bearing also?

Asked by for the 1997 Jeep Grand Cherokee
The bolt doesn't fit through the hole in the new balancer?