OM3232 8/11 Operator Cab And Controls - Section 32 Page 32-15 Speedometer/Digital Display Speedometer/digital display (12, Figure 32-8) has several functions: Headlight/Panel Illumination Light Switch The instrument panel lights, clearance lights, and the headlights are controlled by this three-position rocker type switch (16, Figure 32-8). OFF is selected by pressing the bottom of the switch. Press the top of the switch until it reaches the first detent to select the panel lights, clearance lights and tail lights only. Press the top of the switch again until it reaches the second detent to select headlights, panel lights, clearance lights and tail lights.
The analog speedometer indicates the truck speed in miles per hour (mph) or in kilometers per hour (kph). The digital display shows payload meter information. For more information, see Section 60, Payload Meter III. The digital display also shows warning messages and fault codes indicating abnormal operating conditions and critical problems. See Digital Display Operation for more information. Ladder Light Switch (3-Way) Ladder light switch (17, Figure 32-8) turns the ladder lights on or off after or before using ladder. Pressing the top of the rocker switch turns the lights on. Pressing the bottom of the switch turns the lights off.
Another switch is mounted at the front left of truck near the base of ladder. Coolant Temperature Gauge Coolant temperature gauge (13, Figure 32-8) indicates the temperature of the coolant in the engine cooling system. The temperature range after engine warm-up and a truck operating under normal conditions should be 85° to 97°C (185° to 207°F). Backup Light Switch Drive System Temperature Gauge Backup light switch (18, Figure 32-8) allows the backup lights to be turned on for added visibility and safety when the directional control lever is not in the REVERSE position. When the switch is in the ON position, the backup light indicator on the instrument panel will be illuminated.
Drive system temperature gauge (14, Figure 32-8) indicates the status of the highest measured temperature range in the drive system. Status Indicator Light Panel Status indicator light panel (15, Figure 32-8) contains an array of indicator lights to provide the operator with important status messages concerning selected truck functions. Refer to Status Indicator Lights later in this section for a detailed description of these indicators. Fog Light Switch Pressing the top of fog light switch (19, Figure 32-8) turns the lights on. Pressing the bottom of the switch turns the lights off.