523/524 Air leak fail when train doors a ~~~~~ 523/524 Air leak fail when train doors are open. To check and rectify. From MO: 11029126     #523/524 (6 cars) Door Closed    Air Leak Test 5min (0.5)bar Door Open(CPCB Trip) Air Leak Test 5min (1.9)bar Trip CPCB & Isolated MRIC* EMU#523(3 cars door open) Air Leak Test 5min (2.6)bar EMU#524(3 cars door open) Air Leak Test 5min (1.1)bar Train Uncouple EMU#523 Open Door & isolate CPCB (2.0)bar Closed Door (0.7)bar EMU#524 Open Door & isolate CPCB (1.2)bar Closed Door (0.4)bar Manifold Air Leak: #2524 - A4 #1523 - A4 Done by Saini/haslan/Asruddin. 08/04/21 Continue rectification 523/524 Manifold Air Leak: #2524 - A4-Replace #1523 - A4 Replaced manifold on #2524-A4 and isolated both DT horn & FL cock and done air leak test with open door=5mm 0.6 barConfirm both DT pipeline filter for horn & FL air leak badly and no spare available. Done by Saini/Haslan/Asruddin.  09/04/21