During PM 3714 5/2 way directional valve ~~~~~ During PM 3714 5/2 way directional valve     Found #3714 Auto coupler 5/2 way v/v exhaust port(port 5)leaking in coupled position.Replace CMV to no avail.Replaced with 2 nos serviced 5/2 way v/v to no avail.Further replaced with new set of 5/2 way v/v to no avail.5/2 way v/v & CMV were not the root cause.Suspect Auto coupler internal issue causing the leak.Notification raise to HM for Auto coupler c/o. #3714-Auto Coupler c/o:- Not: 2460468 raise. Done by Zulq/Saini/Asruddin/Haslan/Jack/Koh  09/02/23