Train doors at Front M2 car 2517 were not proven closed. TC recycled train doors once - ok. ~~~~~ 2517 Train doors were not proven closed. TC recycled train doors once - ok. CE : 2517 Doors operation checked ok. Pls check door operations at depot.  2517 performed the following door checks : FOD found: N Weather strip condition ok: Y Roller condition ok: N, Found B1 & B4 rollers pitted. Clean J-rail & guide rail: Y, after rectification 10/20mm gauge test pass: Y, after rectification Push/pull gauge test pass: Y, after rectification Manifold & actuator leaking: N Door cyclic test 20x, DIR extinguish ok: Y, after rectification TIMS door static timing test pass: Y, after rectification Door magnet valve no residue voltage when closed: Y #2517 replaced B1 and B4 door rollers. Security/function check - OK.  Sarma/Sugu/Kamarul/Anand/Shafie 45332