What is the normal pressure range for the main reservoir on PA4 and PA5 cars?

The normal pressure range for the main reservoir on PA4 and PA5 cars is indeed between 130 and 150 psi. This pressure range is crucial for the proper functioning of the braking system, pneumatic systems, and other operational mechanisms on the trains. Maintaining the pressure within this range ensures that adequate air supply is available for efficient operation, providing safety and performance reliability.

When the pressure is too low, it can lead to insufficient braking power and other performance issues, while excessively high pressure could result in system stress or failure. Therefore, understanding and maintaining the correct pressure range is essential for safe train operation.