Parking brake

gurj254:
Anybody know details for scannia??

Sorry posted first before I saw you’d posted the make. Volvo/Scania probably only on the unit drive axle but wonder if this is changing as had a newish Volvo unit in not long ago and think it might have pressurised the yellow but wasn’t really paying attention. Pretty certain that all other makes I’ve come across do pressurise the yellow line.