Back Figure 2-7. PTO/Pusher Axle Controls and Transmission Ratio Selector Control. | Up TM-9-2320-273-10 Truck Tractor Line Haul 500 000 GVWR 6x4. M915 Light Equipment Transporter (LET) Manual | Next KEY TO PTO (M916/M920) PUSHER AXLE CONTROLS (M917, M919 AND M920) AND TRANSMISSION RATlO SELECTOR CONTROL (Cont) |