OM3215 10/04 Operating Instructions - Section 32 Page 32-5 OVERHEAD PANEL AND DISPLAY Radio Speakers The items listed below are located on teh overhead panel. Refer to Figure 32-1 for the location of each item. Abrief description of each component is described below. Radio Speakers (9, Figure 32-1) for the AM/FM Stereo radio are located at the far left and right of the over- head panel. Grade/speed Warning Chart Warning Alarm Buzzer The Grade/Speed WARNING chart (8, Figure 32-1 and also shown below) provides the recommended MAXI- MUM truck speeds for descending various grades with a loaded truck. The operator should reference this chart before descending any grade with a loaded truck.
Proper use of Dynamic Retarding will maintain a safe speed. This alarm (10, Figure 32-1) will sound when activated by any one of several truck functions. Refer to ”Instru- ment Panel and Indicator Lights”, for a detailed de- scription of functions and indicators that will activate this alarm. Cab Radio This panel will normally contain an AM/FM Stereo radio (11, Figure 32-1). Refer to Section 6, Optional Equip- ment, for a more complete description of the radio and its functions. Individual customers may use this area for other purposes, such as a two-way communications radio. DO NOT exceed these recommended MAXIMUM speeds when descending grades with a loaded truck.
Warning Lights Dimmer Control This control knob (12, Figure 32-1) permits the opera- tor to adjust the brightness of the Warning Indicator Lights. Status / Warning Indicator Light Panel This panel (13, Figure 32-1) contains an array of indi- cator lights to provide the operator with important sta- tus messages concerning selected truck functions. Refer to “Instrument Panel and Indicator Lights” , for a detailed description of these indicators. Windshield Wipers The windshield wipers (15, Figure 32-1) are powered by an electric motor. Refer to “Instrument Panel and In- dicator Lights” , for location and description of the wind- shield wiper and washer controls.
The sample chart above applies to a model 830E equipped with GE787 wheel motors with 31.875:1 gear ratio, 40R57 tires, and 14 element 3-step retarding grids. This decal may change with OPTIONAL truck equipment such as: wheelmotor gear ratios, retarder grids, tire sizes, etc. ALWAYS refer to this decal in the operator's cab , and follow these recommenda- tions for truck operation.