Driver Controls and Instruments Suspension Seat Adjustment Controls Air Horn, Optional All adjustment controls for a suspension seat are lo- cated on the seat base. See Chapter 2 for complete instructions. To sound the air-operated horn, pull the cable located above the driver’s door. Dome Light Switches Vernier Throttle Control, Optional A two-bulb dome light, with a built-in three-position switch, is mounted in the center of the rear wall just be- neath the cab roof. The vernier throttle control, located to the left of the steering column, can be used to adjust engine speed when the vehicle is parked.
A "quick adjust" setting of engine speed is made by depressing the button on the control knob, then pushing in or pulling out the knob. Engine speed adjustments can then be made in smaller increments by turning the control knob in either direc- tion. When the switch is in the center position, the dome light will remain off whether or not the cab doors are open. When the driver’s side of the switch is pushed in, the light will remain on whether or not the cab doors are closed. Tilt Steering Wheel When the passenger’s side of the switch is pushed in, the light will work with the driver’s door contact switch. The light will be on when the driver’s door is open, and off when the door is closed.
As an option, the light will work in conjunction with the driver’s and passenger’s door contact switches to turn the light on when either of the cab doors is open, and turn it off when they are both closed. The tilt steering wheel has a tilt range of 15 degrees, and a telescoping range of 2-5/8 inches (67 mm). A control lever is located just below the turn signal switch on the steering column. See Fig. 3.19 . After adjusting the seat to the desired ride position, un- lock the steering column by pushing the control lever and holding it all the way down. Tilt the steering column to the desired position, then release the control lever to lock the steering column in place.
Electric Horn To sound the electric horn, push the button in the center of the steering wheel. To adjust the height of the steering wheel, pull upward on the control lever. While holding the control lever in 3.18