Intermittent brake fault at front M1 car. Train performance - ok. ~~~~~ 1521 carbody height checked for A1 = 849mm, B1 = 841mm, A2 = 849mm, B2 = 849mm. Re-adjusted B1 to 849mm - Done.  Selvan/Chan GF. 28/09/2020.  1521 A/s pressure transmitter cable & transducer replaced. Brake cyclic test - OK. Monitor for 24 hrs & checked on 29/08/2020, no brake fault appeared.  Au TK. 29/08/2020.