What was found
INSPECTION TYPE:N/A, NR 4 WHEEL OVERHEAT ON T/O AS GEAR WERE RETRACTED 320 DEG LOWERED GEAR & TURNED FAN ON, TEMP 259, 15 MIN W/GEAR DOWN & FAN ON TEMP SLOW TO DECREASE (NO RESIDUAL BRAKE PRESS WHEN LOWERING GEAR) AT 115 DEG FAN OFF/GEAR UP, WHEEL TEMP DID NOT FALL BELOW 105 FOR FLIGHT. BITE CHECK BSCU AND FUNCTIONAL TEST OF HOT BRAKE DETECTION IAW AMM 32-47. NO FAULTS NOTED. REMOVED AND REPLACED BRAKE TEMP DETECTOR UNIT IAW 32-47-25-4.