What was found
AFTER LEVELING AT FL 320 HOT BRAKE ECAM. BRAKE TEMPS ON ALL 4 TIRES INDICATED 300 AND CLIMBING . DESCENT TO FL200 TO EXTEND GEAR. TEMPS CONTINUE TO CLIMB TO 485. THEN COOLED TO NORMAL TEMPS, EMERGENCY DECLARED UPON LANDING. FOUND CODE 81 & 82 IN BTCU R&R RELAYS 59 GB & 102 GB ALSO R & R NORMAL BRAKE MASTER VALVE FOR LEFT SIDE IAW MM 32-42-19-0401 IAW TECH WHEN DEBRIEFING CREW THEY SAID IT WAS JUST LT SIDE. OPS & LEAK CHECKS GOOD. NO HISTORY. EFF SOURCE IPC 32-62-08-02L, 60 IPC 32-42-03-08, 60.