TC reported Front DT 'B2' train doors were not proven closed. TC recycled train doors three times - ok. Staff(RFP) checked and confirmed said train doors were a ble to close few seconds after all other train doors were pr ~~~~~ TC reported Front DT 'B2' train doors we


L3  Fault was unable to be duplicated in depot. Doors were not isolated, and doors were able to operate in depot.
Two occurrences of FC 953 at car 3650 – Saloon door B2 Close Operation Timeout CLE at time of fault.
Found 3650 B2 LHS inner roller rubber delaminated from the roller itself.

After roller change out:
Open Close speed pass: Y
FOD found: N
Door cycle 20x: Y
Rubbing marks: N
Door Push/Pull force: ok
Door mating gap: ok
Check Door Lock Switch red line when door closed - ok
Door Lock Switch Cushion Rubber intact: Y
Door Close Switch distance from actuating plate - ok
Door Wobble: N
Rectification Actions:
- Replaced main rollers on 3650 B2 LHS 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 satis.
- Door mating strip distance satis.
- Serviced J-rail and guide rail preventively.

Done by: Jack, Koh, Rizman, Sanip
7/8/23