What was found
LANDING AT GTF, THE NOSE GEAR WOULD NOT EXTEND. RAN THE QRH EXTENDED THE GEAR MANUALLY. FOUND LOCK ACTUATOR RODEND SHEARED OFF. REPLACED NOSE GEAR LOCK ACTUATOR PER MM 32-33-011-4. OPS CHECKS NORMAL. PREMATURE REMOVAL/INSTALLATION OFF MFG 65-40467-6, SRL 864, TAG 6795B5, ON MFG 65-40467-6 SRL 797, TAG 697142.