1539 BCU fault during shunting ~~~~~ #1539 FC 308/330/331 without 750 brake stuck 0.27 and ACU slow release when coast to B1 and air leak from exhaust port.Replace ACU and function test ok.BCP within criteria. ACU-New s/n: 1310-141. Old s/n: 1024-031. Not: 1308103 raise. Done by Saini/Asruddin. 25/08/21