Train prep TC reported car #2546 BCU fau ~~~~~ Check and found FC-308,314,328,329,330,331. FC-314: BCU control pressure fault.During shunting movement,having stuck brake(brake unable to release) Replaced ACU and function test brake ok. ACU:- Old s/n: 1301/124    New s/n: 1024/033 Not: 2493233 raise to CSC. Done by Haikel/Ngieng. 31/05/23