Realtime feedback channel : car 3604 "A4door abnormal sound when closing. Station staff(KTB) check ed and confirmed unusual sound at car 3604 "A4" door. ~~~~~ Realtime feedback channel: 3604 "A4 " door abnormal sound when closing. Station staff(KTB) checked and confirmed unusual sound at car 3604 "A4" door.  3604 A4 RHS outer roller delaminated - replaced. Clean J-rail & guide rail. Weather strip - OK. Push pull door test - No wobbling. No FOD found & door static test - OK. Checked for DIR - OK. Door lock switch line flushed with surface. Door Gap: 64 mm. Sarma/Alan/Fazly/Raja 45111