What was found
UPON ENGINE DISASSEMBLY FOUND ALL 6 CRANK GEAR RETAINING SCREWS 'GANG WIRED'. IN ADDITION TO NOT BEING LOCK WIRED CORRECTLY, THE CRANK GEAR SCREWS WERE ALL LOOSE. SEE TELEDYNE CONTINENTAL MOTORS SIL 93-15 FOR CORRECT USE OF SAFETY WIRE, KEYS, AND LOCK TABS. FURTHER INSP REVEALED THE STARTER SHAFT NEEDLE BEARING, P/N 537721 (SEE GTSIO-520 PARTS BOOK NR X30046A, FIG 1, ITEM NR 3), WAS MISSING AND APPEARED THAT IT WAS NEVER RE-INSTALLED AT OVERHAUL, DATED 7-20-95. ALSO, LOG ENTRIES OF 2-16-96, TSO NOT NOTED, REVEALED CONTINUAL REPORTS OF STARTER/STARTER DRIVE SEAL LEAKS AND REPAIR WHICH IN 'HINDSIGHT' ARE UNDERSTANDABLE KNOWING STARTER DRIVE WAS NOT PROPERLY SUPPORTED ON THE LOWER OF 'CRANKCASE END' OF THE SH