What was found
PSC- FLIGHT 2297 - ON GEAR RETRACTION, THE LT MLG DOOR AMBER LIGHT REMAINED ILLUMINATED. COMPLIED WITH THE CHECKLIST. MTX CONTROL REQUESTED A DIVERSION TO PDX. ACCOMPLISHED AN ALTERNATE EXTENSION AND A UNEVENTFUL LANDING. MAINTENANCE REMOVED THE NR 1 RETRACT ACTUATOR AT THE SHOCK STRUT AND A YOKE. USING RIG TOOL FOUND THE ROD END INCORRECTLY INSTALLED IN THE PISTON. THREADED ROD END TWO FULL TURNS INTO PISTON TO ACHIEVE DIMENSIONS IN CMM 32-31-06 PAGE 703. TORQUED AND SAFETIED ROD END JAM NUT. REINSTALLED ACTUATOR, DID 15 GEAR SWINGS WITH NO DEFECTS. OPERATIONAL CHECKS GOOD. AIRCRAFT RETURNED TO SERVICE. NO PARTS REPLACED.