#3665 encountered stuck brake. To check ~~~~~ #3665 encountered stuck brake. To check     #3665 Check and found ACU heavy air leak from solenoid port when 750vdc off at coast position.Replaced ACU and function check,brake cycle test are ok. ACU-Old s/n: 1516-044  New s/n: 1543-080 Not: 2162357 raise to RSW. Done by Jack/Kumar/Sateesh/Koh. 21/05/20