Train doors at Rear DT car not proven closed. TC recycled train doors once - ok. Fault did not recurat subsequent stations. Train doors at Rear DT car not prov en closed. TC recycled train doors once - ok. Fault did not ~~~~~ 3673 Train doors not proven closed. TC recycled train doors once - ok. Fault did not recur at subsequent stations. Train doors at Rear DT car not proven closed. TC recycled train doors once - ok.  3673 B3 door performed the following checks : FOD found: N Weather strip condition ok: Y Checked roller condition ok: N, B3 LHS outer roller delam Clean J-rail & guide rail: Y Push/pull door smooth & no wobble: Y, after rectification Door cyclic test 20x, DIR extinguish ok: Y, after rectification TIMS door static timing test pass: Y, after rectification Door lock switch red line flush with surface for positive latching: Y Door close switch actuating plate distance ok: Y Door gap (criteria 63mm+1.5mm): 63.6mm Replaced #3674 B3 LHS/RHS door with iron rollers. Security/function door operation - OK.  Alan/Anand/Lee PT/Sugu 45336