As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHEN NOSE WHEEL WAS REMOVED TO GREASE BEARINGS, DISCOVERED THAT BEARING CUP (KOYO MFG) WAS LOOSE IN WHEEL HUB. WHEEL HUB WAS WORN WHERE CUP HAD BEEN SPINNING IN HUB. THE CUP IS NORMALLY A PRESS FIT INTO THE WHEEL. A/C HAD NOSE WHEEL SHIMMY COMPLAINT PRIOR TO DISCOVERY. REPLACED RACE AND WHEEL HALF.