As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PROBLEM REPORTED: PROP WOULD NOT CYCLE W/WARM ENGINE OIL. DISASSEMBLED ENGINE AND FOUND ONE SOCKET HAS SCREW .1562 THAT HOLDS THE TRANSFER COLLAR TOGETHER BROKEN ALLOWING THE COLLAR AND SEALS TO BECOME LOOSE ON CRANKSHAFT OIL TO ESCAPE AND NOT ALL TO THE PROPELLER. NO IMPROPER REPAIR, PREVIOUS ACTIONS.