(RSD) 2688 to check brake frame as hunti ~~~~~ (RSD) 2688 to check brake frame as hunti     #2688 ACU hunting & air leaking from solenoid coarse exhaust.Replaced and carried brake cyclic and function test-ok. ACU-Old s/n: 1434-021  New s/n: 1523-122 Not: 2142228 raise. Done by Kumar/Sateesh/Koh. 18/03/20