This component is a control device specifically designed for use in Peterbilt trucks. It manages the pneumatic system responsible for operating the vehicle’s windows. Functionally, it allows the operator to raise or lower the windows through the manipulation of compressed air. For example, depressing the switch activates a valve, directing air pressure to the window regulator to move the glass panel.
The reliability of this system is crucial for driver comfort and convenience, impacting operational efficiency. Historically, these pneumatic systems offered a robust alternative to manual window cranks, especially in heavy-duty applications. They provide a smoother and potentially faster window operation, increasing ease of use in demanding work environments. Additionally, integrating this system contributes to a more modern and ergonomic cab design, improving the overall driving experience.