As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER LANDING AND PARKED AT THE GATE, GROUND CREW ADVISED THAT THE LEFT MAIN LANDING GEAR WAS ON FIRE. EMERGENCY EQUIPMENT WAS CALLED OUT, BUT NOT REQUIRED. MAINTENANCE REPORTED GREASE FIRE ON THE NR 1 BRAKE. REPLACED THE NR 1 BRAKE AND TIRE. CAUSE FOR EXCESSIVE GREASE UNDER INVESTIGATION.