What was found
AFTER TAKEOFF, LANDING GEAR HANDLE WOULD NOT RAISE ON GEAR RETRACTION, NOSE WHEEL WAS STEERABLE. THIS CAUSED THE AIRCRAFT TO REMAIN IN GROUND MODE. FLIGHT RETURNED TO MSP AND LANDED WITHOUT INCIDENT. EMERGENCY EQUIPMENT WAS CALLED OUT ON STANDBY AS A PRECAUTION. REPACKED NOSE LANDING GEAR STRUT AND SERVICED TO PROPER LEVELS. OPERATIONAL CHECK NORMAL AND AIRCRAFT RETURNED TO SERVICE.