3637 (Raffles Place S/B) TC reported tr ~~~~~ 3637 (Raffles Place S/B) TC reported tr     Downloaded ER on PTU 006.From ER observed #1637 BCP spiked high when other cars BCP was low almost o bar.To raise 0020 to carry out brakes cyclic function test for #1637 Checked by Joshua.  03/05/21 1637 to carry out Brakes Cyclic test. From ER observed #1637 BCP stuck at approx.2 bar when other cars BCP is approx.0 bar.Carried out brakes cyclic test,observed abnormal air purging from solenoid exhaust port.Replaced ACU and carried out brakes    cyclic/function test-ok.To raise 0030 to wasp #1637 BCU with #2637 ACU-New s/n: 1516-111  Old s/n: 1528-130 Not: 2272984 raise to RSW. Done by Sufhian.  03/05/21 To swap BCU from 1637 to 2637. Swap BCU from #1637 to #2637 Cyclic brake test ok. #1637-s/n: 14-31-035  WDC-833mm #2637-s/n: 15-44-286  WDC-837mm Done by Sateesh/Alauddin  03/05/21