As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING O/H, A NEW BEARING WAS PURCHASED. UPON VISUAL INSPECTION PRIOR TO INSTALLATION, TECH NOTICED MARKS ON THE OUTER RACE-WAY AND REJECTED THE BEARING. DURING CLOSER EVALUATION SEVERAL GRINDING MARKS WERE FOUND 360 DEGREES AROUND THE OUTER RACEWAY INSIDE DIAMETER.