What is likely the problem if a second cylinder does not move in a sequence valve system?

In a sequence valve system, the operation relies on specific pressure thresholds and the proper functioning of springs to control the sequence of movements of hydraulic cylinders. If a second cylinder does not move as expected, one possible reason is that the spring tension is too high.

When the spring tension is excessively high, it can prevent the valve from opening at the designed pressure level required to activate the second cylinder. Sequence valves are designed to allow flow to the next cylinder in the series only when the previous cylinder reaches a specific pressure. If the spring holding the valve in its closed position exerts too much tension, it may not permit sufficient pressure to overcome this tension, which in turn prevents the valve from opening. As a result, the hydraulic fluid is unable to reach the second cylinder, and it will not move.

Understanding the role of spring tension in sequence valve systems is crucial. A balance must be maintained; if the tension is too high, the system fails to transition to the next operation as intended. This provides insight into troubleshooting hydraulic systems where cylinder movement is hindered.