1653 PM check found ACU hunting. ~~~~~ #1653-Replaced ACU with mod #4 type and brake function test ok.Also replaced transmitter due to show BCP low. ACU-New s/n: 15081075  Old s/n: 14341022 Not: 2171652 (ACU) raise to RSW Not: 2171653 (Transmitter) raise to RSW. Done by Tay H.K./Loong. 19/06/20