As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) TOTAL TIME UNKNOWN, NOT TRACKED, PILOT STARTED TO TAXI AND REPORTED BAD VIBRATION WITH THE NOSE STEERING ON OR OFF. THE INTERNAL PART OF THE STEERING ACTUATOR COULD BE MOVED BY HAND. STEERING ACTUATOR WAS REMOVED, SYSTEM FLUSHED OUT AND SERVICEABLE STEERING ACTUATOR INSTALLED. SYSTEM WAS RETURNED TO SERVICE.