Train doors at car 2636 were not provenclosed. TC recycled train doors a few times but to no avail.Staff(TIB) assisted to push close and isolate the defective 'A2' doors at car 3636 in close position but to no avail. D  ~~~~~ * ,N * Found 2636 FC043 Saloon door A2 Close Operation Timeout Found 2636 A2 RHS/LHS outer roller delaminated/damaged, picture below. Replaced main rollers on 2636 A2 LH/RHS door. Door operation was smooth without wobbling, cyclic test ok with DIR/DMI able to extinguish. Door static test timing within criteria. Door push/pull resistance force ok Serviced J-rail and guide rail preventively. Resealed both cab DIRBS. DONE BY: KUMAR/FAIZAL 21.07.2023