OM3216 3/10 Operator Cab and Controls - Section 32 Page 32-41 FIGURE 32-21. ARSC CONTROLS 1. Retard Lever 2. ARSC Lever 3. ARSC Switch 4. ARSC Pilot Lamp 5. ARSC Set Speed Indicator 6. Retarder Pilot Lamp a. Set b. Increase Speed c. Decrease Speed d. Cancel If it is desired to decrease the set speed, operate the retarder control lever to reduce speed, and when the desired set travel speed is reached, press the set switch on the auto retarder (ARSC) set lever. The set travel speed will be changed to the new speed. If the set switch and cancel are operated at the same time, cancel is given priority. If the set switch and tap up are operated at the same time, tap up is given priority.
To change the speed without using the accelerator or braking system, tap up (b, Figure 32-21) on the lever to increase the speed. The speed will increase by 1 km/h (0.6 mph). To decrease the speed, tap down (c, Figure 32-21) on the lever. The speed will decrease by 1 km/h (0.6 mph). The maximum speed change that can occur using the tap up - tap down functions is ± 5 km/h (3.1 mph). If the set switch and tap down are operated at the same time, tap down is given priority.