TC feedback of unusual noise heardat'A1' train door, car 3638.Staff (SOM) checked and confirme d the door wasshaking and vibrating slightly while opening& closing. TC feedback of unusual noise heardat'A1' tra ~~~~~ 3638 TC feedback of unusual noise heard at A1 train door.  Staff(SOM) confirmed the door was shaking and vibrating slightly while opening &    closing. CE: T407-3638 A1 door shaking and vibrating when Opening and Closing.  3638 A1 door performed the following checks : 1) Check history DCP swapped before & date: NIL 2) Check fault code: No fault code 3) FOD found: N 4) Weather strip condition ok: Y 5) Removed door checked roller condition ok: LHS outer roller       delaminated 6) Clean J-rail & guide rail: Y 7) Push/pull door smooth & no wobble: Y (after door roller          replacement) 8) Door cyclic test 20x, DIR extinguish ok: Y 9) TIMS door static timing test pass: Y 10)Door lock switch red line flush with surface for positive        latching: Y 11) Door close switch actuating plate distance ok: Y #3638 A1 door LHS roller replaced. Function check - OK.  Aliff/Daniel/Redzwan 45251