DCO reported train door shaky at car 2609. Station staff(TAP) checked and confirmed A4 train door vi brating when closing and opening. Station staff were arrange d to escort the train. Stock changed arranged at AMK NB. (A ~~~~~ DCO reported train door shaky at car 2609 Shaky.   #2609 found A4 door wobbly due to RHS outer roller damage, replaced new roller and function tested satis. No signs of rubbing marks. Done by Haslan and Azwad. 16/11/2023