CE : 667/668 intermittent brake fault ~~~~~ CE : 667/668 intermittent brake fault   6  #2667 Found stuck brake.Replaced ACU due to air leak from exhaust port.Function test brake ok. ACU-New s/n: 1508-078  Old s/n: 1516-101 Not: 2140256 raise. Done by Kalees/Jun. 12/03/20