Seat Controls
4700 dm 04.12.000
Note: See Seats, General Information 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..
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Backrest Tilt
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Lumbar Support
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Isolator Feature
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Height Adjustment
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Bottom Cushion Angle (fore-and-aft cushion height)
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Fore-and-Aft Seat Slide (seat track adjustment)
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Seat Tilt
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Headrest Adjustment
Fig. 1, General Seat Adjustments
- Backrest Tilt: This adjustment enables the backrest to pivot forward or backward.
- Lumbar Support: Lumbar support changes the shape of the seat back 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.
- 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.
- 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.
- Bottom Cushion Angle, or 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.
- Fore-and-Aft Seat Slide, or Seat Track Adjustment: This adjustment moves the entire seat forward or backward on its track.
- Seat Tilt: This adjustment allows the seat assembly (back and bottom cushions) to tilt forward or backward.
- Headrest Adjustment: This adjustment changes the angle of the upper part of the backrest to provide head and upper back support.
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