3684 Electrical Coupler Leak (DT check) ~~~~~ 3684 Electrical Coupler Leak during DT check. To check and rectify.     Checked and found #3684 coupler centering device hose fitting broken off.Replaced hose and fitting.No leak observed.Coupler function test ok.Coupler centering ok.Air leak rate 0.2bar/5min. Done by Lincoln Koh. 10/01/22