As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING DISASSEMBLY OF ENGINE GEARBOX, NR 4 BEARING WAS FOUND NOT TO BE SEATED ALL THE WAY ON THE JOURNAL ON THE HELICAL GEAR DUE TO IMPROPER INSTALLATION. SUBSEQUENT INSPECTION FOUND THE 6875776 OIL NOZZLE GOUGED ON THE BOTTOM FLANGE BY THE BEARING. REPLACED NOZZLE.