#3610 B4 door unable to open (Train prep ~~~~~ #3610 B4 door unable to open (Train prep     #360-B4 door did not open no fault code.Check door matting 62.5mm Push/pull-10~12kg.DCS to plate 15mm.DLD rubber cushion ok.DLS red mark not visiable.Check and service clean guide rail,J-rail no sign of FOD.Found LHS door wobble.RHS door ok.Remove both door further check found LHS door 2 main roller damage.RHS roller ok.Replace 2 roller after rectification door matting adjusted 63.1.push,pull 5kg.Conduct door static open/close within criteria.Door cyclic test few times ok. Done by Zulq/Saini/Asruddin/Haslan.  04/08/22