Operation - Section 3 OM3020.3 02/01 Page 3-30 Instrument Panel & Indicator Lights (15, Figure 3-6) RIGHT TURN SIGNAL INDICATOR This light illuminates to indicate the right turn signals are operating when the turn signal lever on the steering column is moved upward. Moving the lever to its center position will turn indicator “Off”. (16, Figure 3-6) HIGH BEAM INDICATOR The high beam indicator when lit, indicates that the truck headlights are on “High” beam. To switch headlights to “High” beam, push the turn indicator lever away from steering wheel. For “Low” beam, pull lever toward the steering wheel.
(17, Figure 3-6) LEFT TURN SIGNAL INDICATOR This light illuminates to indicate the left turn signals are operating when the turn signal lever on the steering column is moved downward. Moving the lever to its center position will turn indicator “Off”. (18, Figure 3-6) SPEEDOMETER The speedometer indicates the truck speed in miles per hour (MPH), or with OPTIONAL speedometer, it may indicate truck speed in kilometers per hour (KPH). (19, Figure 3-6) VOLTMETER The voltmeter indicates the voltage of the 24V battery system. Normal indicated voltage at high RPM is 27 to 28 volts with batteries in fully charged condition.
When keyswitch (10) is “On” and engine is NOT running, voltmeter indicates battery charge condition. (20, Figure 3-6) ENGINE OIL PRESSURE GAUGE The engine oil pressure gauge indicates pressure in the engine lubrication system in pounds per square inch (psi). Normal operating pressure after engine warm up should be: Idle - 70 to 75 psi (480 - 520 kPa) Rated Speed - 75 to 80 psi (520 - 550 kPa) (21, Figure 3-6) WATER TEMPERATURE GAUGE The water temperature gauge indicates the temperature of the coolant in the engine cooling system. The temperature range after engine warm-up and truck operating under normal conditions should be:
165°-195°F (74°-91°C) (22, Figure 3-6) FUEL GAUGE The fuel gauge indicates how much diesel fuel is in the fuel tank. Fuel tank capacity is 1200 gallons (4542 liters).