Driver Controls The climate control panel allows you to control the heating, ventilating, defrosting, and air conditioning functions. Western Star vehicles have several heater and air conditioner options. Isolator : This feature reduces the amount of road shock by isolating the occupant from the motion of the vehicle, and allowing the upper seat to move in a simple pendulum motion. A lockout feature is used whenever the isolator is not desired. Options for the cab include: heater only heater and air conditioner Height Adjustment : This adjustment moves the entire seat up or down. The adjustment is either manually- or air-controlled, depending on the make of the seat.
heater and air conditioner with automatic tem- perature control (ATC) Options for a sleeper unit include: Bottom Cushion Angle (fore-and-aft bottom cushion height) : This adjustment enables the occupant to raise or lower the front or back of the bottom cushion. This adjustment is easier to perform when all weight is removed from the seat. no heater or air conditioner heater only heater and air conditioner heater and air conditioner with ATC Fore-and-Aft Seat Slide (seat track adjust- ment) : This adjustment moves the entire seat forward or backward on its track.
The ATC feature automatically controls the heating and cooling system to maintain the cab and sleeper air temperature close to the temperature set by the user. The ATC adjusts the air temperature blown through the air outlets to maintain the selected tem- perature. Seat Tilt : This adjustment allows the seat as- sembly (back and bottom cushions) to tilt for- ward or backward. Headrest Adjustment : This adjustment changes the angle of the upper part of the backrest to provide head and upper back support. Seat Controls NOTE: See Chapter 6 for detailed information about seat controls and adjustments. WARNING Keep hands, tools, and other objects away from the scissor points under the seats.
Failure to do so could cause personal injury. The following is a description of adjustments that can be made to various Western Star seats. Not all seats have all of the adjustments listed below. See Fig. 4.28 . Backrest Tilt : This adjustment enables the backrest to pivot forward or backward. Lumbar Support : Lumbar support changes the shape of the backrest to give more or less support to the occupant’s lumbar (lower back) area. This adjustment is either mechanical or air controlled, depending on make and model of the seat. 4.14