When pressure testing a hydraulic assisted power steering system, what does it indicate if the highest pressures were greater than 50 PSI of each other?

When pressure testing a hydraulic assisted power steering system, if there is a significant difference in pressure readings—more than 50 PSI—between the high and low sides, it suggests an issue with the flow control valve. The flow control valve plays a crucial role in regulating the pressure and flow of hydraulic fluid within the steering system. If this valve is malfunctioning or blocked, it can lead to an imbalance in pressure that results in higher readings on one side compared to the other.

When the flow control valve does not operate as intended, it can restrict fluid flow or fail to maintain proper pressure levels, thereby causing discrepancies in the system’s pressure that could exceed 50 PSI. This can negatively affect the steering performance, making it difficult to steer and potentially causing other components to wear out more quickly due to the increased stress.

Understanding this relationship between the flow control valve and pressure readings in the steering system is essential for diagnosing issues effectively during routine maintenance or troubleshooting situations. Proper interpretation of pressure test results is key for technicians in ensuring the functionality and reliability of the hydraulic steering system.