What was found
DURING TRAIL ASSY OF NEW 13S19646 GEAR, MARKED 7/89, 27/98, MFR 30620, IN CONJUNCTION WITH FAA AD 91-14-22 INSPECTIONS, THE GEAR WOULD NOT START INTO THE CRANKSHAFT COUNTERBORE. INTERFERENCE WAS FOUND BETWEEN THE CRANKSHAFT COUNTERBORE ID AND THE P/N STD-1065 DOWEL DUE TO AN APPARENT OUT-OF-TOLERANCE CONDITION OF THE RADIAL POSITION OF THE DOWEL HOLE IN THE CRANKSHAFT AND/OR GEAR. CRANKSHAFT WAS REPAIRED BY RELOCATING DOWEL HOLE AND INSTALLING OVERSIZE DOWEL.