As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON TAKEOFF ROLL AT JUST PRIOR TO 40 KTS THE NOSE WHEEL STARTS A VERY EXCESSIVE VIBRATION. FOUND SHIMMY DAMPER LEAKING FLUID, NO FLUID LEFT. REMOVED AND REPLACED SHIMMY DAMPER WITH O/H UNIT IAW MM, CONFIRMED PROPER SERVICING OF INSTALLED SHIMMY DAMPER.