What was found
AFTER TAKEOFF, THE NOSE LANDING GEAR WOULD NOT RETRACT. PERFORMED COCKPIT OPERATING MANUAL PROCEDURE AND RECYCLED GEAR. GEAR WOULD NOT RETRACT. SLOWED AIRCRAFT TO APPROXIMATELY 180 KNOTS AND RECYCLED GEAR AGAIN. GEAR RETRACTED AND ALL INDICATIONS WERE NORMAL. FLIGHT CONTINUED TO MIA AND LANDED WITHOUT INCIDENT. MAINTENANCE SERVICED NOSE STRUT AND SWUNG GEAR SEVERAL TIMES, OPERATIONAL CHECK OK.