3710-AIR LEAK FROM COUPLER.TO RECTIFY ~~~~~ To follow up.  3710 auto coupler cylinder(LHS) found leaking. Replaced cylinder & function check - OK. Air leak 0.2bar/5mins. Limited movement and depot shunting - OK.  Sarma/Sugu/Anand 45232 3710 - AIR LEAK FROM COUPLER.  3710 replaced with new bi-directional valve. Air leak still occurred at RHS shaft. OPS 20 raised to follow-up.  Daniel/Redzwan 45231