What was found
NOSE GEAR WOULD NOT RETRACT AFTER TAKEOFF. LANDING GEAR HANDLE SELECTED OVER THE GATE AND INTO UP POSITION. THE GREEN MAIN GEAR INDICATOR LIGHTS EXTINGUISHED. THE GREEN NOSE GEAR INDICATOR LIGHT REMAIN ILLUMINATED. JACKED ACFT AND ATTEMPTED GEAR SWING FOUND NOSE GEAR WOULD NOT CENTER PREVENTING IT FROM RETRACTING. REMOVED NOSE STEERING ACTUATOR. FOUND NOSE TRUNNION BEARINGS BAD. R & R NOSE TRUNNION BEARING AND RIGGED AND BLED SYS IAW MM CH 32-50-00. PERFORMED NUMEROUS GEAR SWINGS. LANDING GEAR EXTENSION AND RETRACTION OPS CHECKED GOOD.