Train doors at rear m2 carwere not proven closed. TC recycled train doors once - ok. Staff(BDK) ch ecked and confirmed no train doors abnormalities. Fault did not recur at subsequent stations. Train doors at rear m2 car ~~~~~ 2539 Train doors were not proven closed. TC recycled train doors once - ok. Staff(BDK) confirmed no train doors abnormalities. Fault did not recur at subsequent stations. ALJ WB CE:2539 Door operations checked ok  2539 No FC. Checked B/S saloon door found B1-B4 door rollers outer & inner door rollers pitted which cause door heavy vibration during closing & opening. Replaced B1-B4 Door rollers. Clean J-Rail & guide rail weather strip - OK. Door cyclic checked -OK.Door 10mm/20mm gauge - OK. Open/close timing -OK.No FOD found. . OPS20 Raised to check #2539 A/S Doors due to no platform available. Sarma/Alan/Lee PT/Kamarul/Anand 45430 2539 to check A side doors. Checked 2539 -No FC.Checked A/S Doors found A1-A4 Door rollers pitted all round. Replaced door rollers. Weather strips - OK.    Cleaned J-Rail & guide rail. Door cyclic check - OK. Door guage 10mm/20mm - OK. Door timing -OK. No FOD found. All doors proven closed.No DIR lited. Sarma/Alan/Lee PT/Kamarul/Shafie 45431