Train doors at car 3654 were not provenclosed. TC opened and closed 3 times to clear fault. Fault r ecurred at SBW2, TC opened and closed 3 times to clear fault . Staff (YIS) assisted to isolate the B1 door in car 3654. ~~~~~ #3654-B1 door during operation - vibration. Found RHS door roller wobbling due to roller worn out. Replaced roller and cleaned J-rail/door guide rail. Pull/push gauge tested 7.5kg. Measure door mating strip 67/65/65, adjusted to 64/63/64. Done by Kumar/Jack/Sateesh/Koh. 17/02/20.