TC reported TIMS showed obstacle detected at car 3636 'A4' door intermittently. Staff(BDL) checked a nd confirmed car 3636 'A4' did not opened fully. Staff(BDL) isolate the defective pair of train doors car 3636 'A4' door ~~~~~ 3636 TC reported TIMS showed obstacle detected A4 door intermittently. Staff(BDL) confirmed 3636 A4 did not opened fully. Staff(BDL)isolate the defective pair of train doors 3636 'A4' door in close position  3636 A4 RHS door roller delaminated - Replaced. Tested operation - OK. Alan/Anand/Lee PT/Kamar 45246