OM3017.2 Operation - Section 3 Operator Cab and Controls Page 3-13 (8) ENGINE IDLE SWITCH ( Not Functional w/STATEX III & Fuel Enhancement) STEERING COLUMN The steering wheel (1, Figure 3-4) will adjust through a tilt angle to provide a comfortable position for opera- tors. The Engine Idle Switch controls the engine idle RPM. When switch lever is moved forward toward this sym- bol, operator can control engine speed anywhere between low idle and high idle settings. This is the "low" engine idle position. This posi- tion should be used when maneu- vering in confined areas.
When switch lever is moved rearward toward this symbol and truck speed is above 3 mph (4.8 kph), the operator may control engine speed only between dynamic retard engine speed (1675 RPM) and high idle. This is the "hauling" position. During hauling operations, Engine Idle Switch should be in this postion. When truck speed is below 3 mph (4.8 kph), truck operates the same as "low" idle posi- tion. FIGURE 3-4. STEERING COLUMN 1. Steering Wheel 3. Turn Signal Lever 2. Tilt Lever Adjusting the tilt of the steering wheel is done by pulling the tilt adjustment lever (2) toward the steering wheel and moving the wheel to the desired angle.
Releasing the lever will lock the wheel in the desired location. (9) 12VDC POWER SUPPLY This connection is located on the lower right side of the center console and provides a power source for a computer with a 12 Volt power supply adapter. Turn Signal Lever (3) is used to activate turn signal lights: Move lever upward to signal a turn to the right. (10) COMPUTER DIAGNOSTIC PORT Move lever downward to signal a turn to the left. This connection provides a port to plug in a computer for Statex III diagnostics. HORN (11) DATA STORE SWITCH The horn is actuated by the horn button in the center of the steering wheel.
When the button is depressed, it activates the air horn solenoid allowing system air pressure to pass through the horn mechanism. The DATA STORE should be used ONLY when the engine is running. When the DATA STORE switch is pressed, the Statex III computer controlling the electric drive system is caused to "take a snap shot" of all systems being monitored at that time. This information is then available later for qualifed maintenance person- nel to access and analyze. This function should be used anytime the operator might suspect a system malfunction. HEATER ASSEMBLY Heat for the cab is provided by passing coolant from the engine cooling system through a heater core.
Blow- ers move air across the heating core which warms the air for heating or defrosting. For heater operation, refer to the heater control instructions in the INSTRUMENTS AND INDICATORS section of this handbook.