What was found
DURING ROTATION, ACFT PITCHED UP VIOLENTLY REQUIRING SIGNIFICANT FWD PRESSURE ON THE YOKE TO AVOID OVER ROTATION. REMOVED ELEVATOR TRIM WHEEL & FOUND TRIM INDICATOR TRACK CRACKED & 3/4 INCH PIECE MISSING, TRIM IS OUT OF ADJUSTMENT. FURTHER INSPECTION REVEALED TRIM WHEEL ASSEMBLY BOLT THROUGH PEDESTAL IS BENT, CAUSING TRIM WHEEL & CHAIN TO GET TIGHT THEN LOOSE & ALLOWING TRIM POINTER TO BECOME DISENGAGED FROM THE TRIM WHEEL TRACK. DISASSEMBLED PEDESTAL FOR ACCESS TO TRIM WHEEL ASSEMBLY. REMOVED BOLT FROM TRIM WHEEL ASSEMBLY. INSTALLED NEW BOLT PN AN3-60, NSN IAW MM 27-32-01. REASSEMBLED PEDESTAL & INSTALLED NEW TRIM WHEEL. CHECKED TRIM TRAVELS, IAW MM 27-31-00, CHECKED NORMAL. RAN ENGS & OPERATIONS CHECKED PEDESTAL COMPONENTS, CHECKED NORMAL.