OM3023 10/00 Operation - Section 3 Operating Instructions Page 3-25 ARSC (Automatic Retard Speed Control) (Optional) Set Speed Display (3, Figure 3-4) This displays the speed (km/h) that has been set. When traveling downhill, if the switch is pressed at the speed that is to be maintained, the retarder is automatically actuated to prevent the travel speed from exceeding the set speed. The display turns off when the system switch is OFF. It displays 0 when the set value is canceled. When the key switch in ON or the system switch is ON, the display shows Е, and then shows 0. System Switch (1, Figure 3-4) This is used to turn the ARSC system ON/OFF.
ARSC Caution Light (4, Figure 3-4) ARSC Set Lever (2, Figure 3-4) This flashes if there is any abnormality in the ARSC system when the system switch is ON. It lights up for 3 seconds when the key switch is turned ON to check the bulb. Used when making fine adjustments up or down to the set speed. (Tap up/tap down) Used when setting the travel speed. Used when canceling the set speed. Central Warning Lamp (5, Figure 3-4) This lights up together with the ARSC caution lights if there is a serious abnormality in the ARSC system when the system switch is ON. FIGURE 3-4. AUTOMATIC RETARD SPEED CONTROL COMPONENTS 1. System Switch (ON/OFF) 2. ARSC Set Lever 3. Set Speed Display 4.
ARSC Caution Light 5. Central Warning Light 6. Retarder Control Lever 7. Accelerator Pedal 8. Brake Pedal 9. Ready Light 10. Exhaust Brake Switch 11. Lock-Up Pilot Light