12. OPERATION 12.5 SHIFTING GEAR Shift gear as follows. This machine has an automatic transmission, so set shift lever 1 to the desired position, and the transmission will automatically shift to a position to match the travel speed. When the dump body has risen, the shift lever is locked to 2nd speed at the D position and 1st speed at the 5-L position. While traveling, lower the dump body. NOTICE When shifting between FORWARD and REVERSE, stop the machine completely, and run the engine at low idling when shifting the lever. After moving the shift lever, do not depress the accelerator until you detect that the transmission clutch has engaged.
Do not operate the shift lever with the accelerator pedal de- pressed. This will cause a big shock, and will also reduce the life of the machine. SHIFTING UP 1. When accelerator pedal 2 is depressed to accelerate the ma- chine, the lockup clutch is engaged to shift the transmission to direct drive. 2. If the machine is accelerated further, the transmission will auto- matically shift up. SHIFTING DOWN If accelerator pedal 2 is released, the machine speed will be reduced, and the transmission will automatically shift down. DOWN SHIFT INHIBIT This prevents the engine from overrunning if the shift lever is operated mistakenly.
OVERRUN PREVENTION DEVICE While operating the machine, if the red range lights up, simul- taneously the warning buzzer sounds and the central warning lamp flashes, then operate the machine lowering the engine speed and the traveling speed. If the travel speed goes above the maximum speed for the range of the shift lever, the overrun prevention device is actuated to act the retarder and to reduce the travel speed. 2-70