Been there done that with the Bearing Cap locator PIN.
The BEST way to fix the pushed thru PIN is to remove ALL Parts from the CASES.
Insert the PIN and the Bearing Cap.
Break Off the Cracked CHIP and push the PIN until fully down and seated in the Bearing Cap.
Then have a GOOD TIG Welder Cover over the Pin.
It will be 1005 Permanent the TIG won't stick to the Pin it will still be removable.