3570 DT checked reported BCU fault. ~~~~~ 3570 DT checked reported BCU fault.     #3570 Check and found ACU slow in release.Replaced ACU and function check ok.Braking cycle test are ok. ACU-Old s/n: 1249-045  New s/n: 1250-052 Not: 2143729 raise to RSW. Done by Sateesh. 23/03/20