What was found
BRAKES APPEAR TO BE TO BE LOCKING UPON TOUCHDOWN & EXIT FROM R WY GRABING...UPON TAXI INTO RAMP, ACFT EXPERIENCED NR 4 MAIN TIRE DEFLATION. NR 4 BRAKE FOUND DISINTEGRATED. HUB CAP WAS FOUND ON A TAXIWAY PARTIALLY SHAVED OFF & ALSO DISINTEGRATED. ACFT TOWED TO THE GATE . CLEANED UP TRAIL OF METAL DEBRIS FROM BRAKE. UNABLE TO REMOVE NR 4 BRAKE - WHEEL DUE TO LOCK NUT SHIFTING OFF THREADS ALONG WITH OTHER SEVERE DAMAGE. REPLACED NR 3 MAIN. FOUND WHEEL ASSY AND BRAKE ASSY WITH MELTED MATERIAL. RECOMMEND PULLING AXLE WITH NR 4 WHEEL & BRAKE ATTACHED. COMPLETED PARTIAL REMOVAL OF RT GEAR AXLE IAW AMM 32-11-85-000-801, UP TO & INCLUDING E. (7). COMPLETED REMOVAL OF RT MLG AXLE WITH WHEEL & BRAKE ATTACHED DUE TO DAMAGE IAW AMM 32-11-85-000-801. RT MLG REQ HIGH ENERGY STOP INSPECTION IAW AMM TASK 05-51-07-210-801 OTHER REQ INSPECTION ARE THE FOLLOWING BRAKE SEIZURE CONDITIONAL INSPECTION IAW AMM 05-51-15-210-801, HEAT DAMAGE INSPECTION OF AXLE IAW AMM TASK 05-51-17-210-802, WHEEL BEARING FAILURE IAW AMM 05-51-17-210-801 AND TIRE TREAD LOSS OR TIRE BURST CONDITIONAL INSPECTION IAW AMM 05-51-54-210-801 COMPLETED WHEEL BEARING FAILURE IAW AMM 05-51-17-210-801. NO DAMAGE OR OVERHEAT SIGNS FOUND ON MLG STRUT ITSELF. AXLE, WHEEL & BRAKE ASSEMBLY REQ REPLACEMENT DUE TO BEING STUCK TOGETHER.