What was found
(CAN) AFTER ARRIVING, THE FO CARRIED OUT A WALK ROUND OF THE AIRCRAFT IN PREPARATION FOR THE NEXT DEPARTURE. DISCOVERED THAT THERE WAS SMOKE COMING FROM THE NR 2 MAIN WHEEL ON THE LEFT HAND SIDE OF THE AIRCRAFT. USED A THERMAL IMAGING CAMERA TO ASCERTAIN THAT THE CENTRE OF THE WHEEL IN QUESTION WAS OVER TWICE AS HOT AS THE OTHER MAIN WHEELS. UPON INSPECTION, DISCOVERED THAT THE NR 2 BRAKE WAS BINDING AND CHANGED THE BRAKE ASSEMBLY AND WHEEL BEFORE THE AIRCRAFT DEPARTED AGAIN WITHOUT FURTHER INCIDENT.