Pax feedback to staff(TIB) smoke smell at train door #8 from the rear DT car each time train doors o pened since RFP station. Staff(QUE) checked and confirmed nosign of burning smell / smoke on exterior of train. Staff(Q  ~~~~~ FOUND 3535 AXLE 3 B WHEEL BRAKESHOE DAMAGED. SHOE FIXED WITH BROKEN PORTION. RESULTING DAMAGE TO WHEELS, JOUR L BOX OVER TEMP (>82'C). CHANGE OUT NEW BRAKE SHOE AND AFTER FUNCTION TEST FOUND THREAD BRAEK UNIT HAVING KNOCKING SOUND WHEN GOING TO COAST (B3/A4 BRAKE UNIT). NOTIF RAISED TO RWD FOR BOGIE 2 C/O.JIMMY/IBRAHIM/LEONG,16/8/2021 NOTIF: 2305442- BOGIE 2 C/O NOTIF: 2305459- WHEEL LATHE