What was found
DURING CLIMB, LIGHT COMES ON INDICATION BRAKE TEMP WITH BTMS INDICATION 8 5 6 6 TOP 0 1 1 9 BOTTOM COMPLETED NN CHECKLIST TEMPERATURE INITIALLY GOES UP THEN SLOWLY DOWN MADE LOW PASS REPORTED OK AFTER RETURNING TO FIELD (ATB)AND LANDING . MTX GROUNDED A/C AND AFTER TROUBLE SHOOTING FOUND TEMP SENSOR T591 SHORTED TO GROUND REMOVED AND REPLACED T591 SENSOR AND BRAKE TEMP MONITOR M115 IAW B767 AMM. 32-46-03. OPS CHECK GOOD . MTX RETURNED A/C TO SERVICE