474 / | HD | ENDLESS BELT POWER TRANSMISSION SYSTEMS OR COMPONENTS |
101 | DF | MEANS FOR ADJUSTING BELT TENSION OR FOR SHIFTING BELT, PULLEY OR GUIDE ROLL {11} |
102 | DF | .~ With sensor for controlling operation of shifter to correct belt training deviation {3} |
105 | .~.~ Sensor actuates pawl-and-rachet mechanism to operate shifter |