3537 TC feedback train intermittent whee ~~~~~ #3537 Checked from Tims fault code 322, 323. During depot shunting shown W/S/S. Checked tachogen, dump v/v, wheel flat, all ok. Replaced BCU and function check ok. Limited movement done - no W/S/S occurred. To be further monitoring at M/L service. BCU: Old s/n: 1811-081.  New s/n: 1819-177. Done by Jack/Sateesh/Koh. 28/05/20.