A B767-300 WAS DISPATCHED IN NON COMPLIANCE WITH THE INCORRECT BRAKE AND WHEEL ASSEMBLY INSTALLED IN #2 POS.

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I AM A LINE AMT WITH ACR X; BASED AT ZZZ ARPT. ON MAR/WED/03; AT APPROX XA00; AN ACR X B767 LANDED AND EXPERIENCED VERY HIGH NUMBER 3 BRAKE TEMPS ON ROLLOUT. I WAS RADIO CONTACTED AND ADVISED OF THE PROB BY THE ACR MAINT TWR. UPON ARR AT THE GATE; I APPLIED CONDITIONED AIR TOWARDS THE BRAKE ASSEMBLY. EXCESSIVE HEAT FROM THE BRAKE CAUSED A THERMAL RELEASE OF THE NUMBER 3 WHEEL ASSEMBLY. A LEAD AMT ARRIVED TO MY AID. HE THEN RADIOED THE MAINT OFFICE; REQUESTING A BRAKE AND WHEEL ASSEMBLY FOR ACFT. OTHER MECHS ARRIVED AND BEGAN REMOVING THE WHEEL AND BRAKE. THE 'NEW' BRAKE AND WHEEL ARRIVED AT THE GATE; AND THE BRAKE WAS INSTALLED ON THE ACFT. TROUBLE WAS ENCOUNTERED WHILE TRYING TO INSTALL THE WHEEL ON THE BRAKE. IT WAS THEN DETERMINED THAT THE INCORRECT WHEEL HAD BEEN DELIVERED. WHILE THE CORRECT WHEEL ASSEMBLY WAS BEING LOCATED AND BROUGHT TO THE ACFT; THE LEAD AMT CONFIRMED TWICE WITH THE MAINT OFFICE THAT THE CORRECT BRAKE HAD BEEN INSTALLED. THE CORRECT WHEEL ASSEMBLY THEN ARRIVED AT THE GATE AND WAS INSTALLED ON THE ACFT. A LEAK CHK WAS PERFORMED ON THE BRAKE; AND I SIGNED OFF ON THE WORK. I THEN RELEASED THE ACFT BACK TO SVC. I WAS CONTACTED BY MY DUTY MGR TODAY (APR/THU/03) AT XB00 AND ASKED TO COME TO THE ARPT AND GIVE A WRITTEN STATEMENT. ONCE THE REMOVED BRAKE HAD MADE IT TO THE SHOP; THEY DETERMINED THAT A PRE-ENGINEERING CHANGE ORDER BRAKE HAD BEEN INSTALLED ON A POST ENGINEERING CHANGE ORDER ACFT. TO MY UNDERSTANDING; THE INCORRECT BRAKE HAS BEEN REMOVED FROM THE ACFT; AND NO SIGNIFICANT EVENTS OCCURRED WHILE IT WAS BEING INSTALLED.