MECHANIC REPORTS A B737-NG ACFT ARRIVED WITH A #3 'SMOKING BRAKE' NOT CAUSED BY A SHORT FIELD STOP OR A 'HIGH ENERGY STOP'. SAME BRAKE HAD TWO PREVIOUS WRITE-UPS FOR SIMILAR CONDITION. BRAKE REPLACED.

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ACFT ARRIVED WITH A 'SMOKING BRAKE' WHICH; DURING A BRIEF RESEARCH CHK; HAS HAD 2 PREVIOUS WRITE-UPS FOR THE SAME DISCREPANCY ON THE SAME BRAKE WITHIN THE PAST 45 DAYS. THIS BRAKE CHANGE WAS DONE ON A THROUGH-FLT; WITH THE BRAKE CHANGE BEING THE ONLY EVENT PENDING ACFT DEP. DURING MY 'PLT CHK' ON ACFT X; THE OUTBOUND COPLT INFORMED ME OF A 'HOT' BRAKE THAT WAS SMOKING MORE THAN HE WAS USED TO SEEING AND ASKED ME TO LOOK AT IT FOR HIM. HE DIRECTED ME TO THE #3 MAIN LNDG GEAR BRAKE. WHEN I SAW THE BRAKE; IT WAS VISIBLY SMOKING; AND WAS THE ONLY BRAKE SMOKING ON THE ACFT. I THEN ASKED THE INBOUND CREW IF THEY PERFORMED A SHORT FIELD STOP; AND THEY SAID 'NO.' I EXPLAINED TO THEM THAT I WAS ASKING BECAUSE OF THE SMOKING BRAKE THAT WAS RPTED TO ME; AND THEY HAD TOLD ME THAT NOTHING ABNORMAL HAD OCCURRED DURING THEIR LNDG. I TALKED TO MY LEAD ON DUTY; MR A; AND HE SUGGESTED SIGNING THE DISCREPANCY OFF WITH A 'HIGH ENERGY STOP' INSPECTION. I TOLD HIM THAT WOULD NOT BE APPROPRIATE BECAUSE A HIGH ENERGY STOP WAS NOT PERFORMED. I CHKED IN THE ACFT LOGBOOK FOR ANY HISTORY ON THIS BRAKE ISSUE; AND FOUND IT HAD BEEN RPTED TWICE WITHIN THE PAST 45 DAYS WITH THE SAME DISCREPANCY. I SUGGESTED REPLACING THE BRAKE BECAUSE OF THE HISTORY I HAD FOUND; AND THOUGHT THERE MIGHT BE A BAD BRAKE INSTALLED; AND WE SHOULD DO MORE THAN JUST 'INSPECT' THE BRAKE. FINALLY; HE AGREED; AND MYSELF; MR B; AND MR C; WENT OUT TO CHANGE THE #3 MAIN LNDG GEAR BRAKE. DURING THIS BRAKE CHANGE; I PRIMARILY WAS GETTING TOOLS FOR THE OTHER MECHS WORKING WITH ME. SETTING UP THE JACK; GETTING THE EQUIP NEEDED.