601/602 Hotbox triggered at mainline. ~~~~~ 601/602 Hotbox triggered at mainline. 3601: Bearing temperature A1-71,-A2-71,A3-70 and A4-71 1601: Bearing temperature A1-72.  601/602 checked TIMS & found no FC recorded. Checked all #3601/#1601 axle temperature stickers & all were not blackened. Replaced all with new temperature stickers. Checked axle & gear box for any oil/grease leakage - OK. Brake shoes condition checked - OK. Brake cyclic test & all brakes able to apply/release according to demand. Checked wheels condition with RS2A/3A & found #1601 A2 & A3 wheel flange height failed criteria. Notif 2509392 raised to RSW for wheel profiling.  Sugu/Shafie 45133 Notif 2509392 Nameßßßßßßßßßßßßßßßßßßßßßßßßß : UPD Support team Date of Occurrenceßßßßßßßßßßß : 26/07/2023    Last Service Dateßßßßßßßßßßßß :   EMU / Equipment / Locationßßß : 1601 / Wheel flange height /                                     A2,A3 Equipment Serial No. (if any) :   Description of fault / causeß : Wheel Flange height fail Measurements (if any)ßßßßßßßß :   Required Rectificationßßßßßßß : Required Wheel profilling