What is hydraulic system bleeding?

Hydraulic system bleeding refers to the process of removing air from the hydraulic system. Air can become trapped in the hydraulic lines or components, which can lead to reduced efficiency, erratic operation, and even damage to the system. When air is present, it can compress under pressure, unlike hydraulic fluid, which can lead to a spongy feel in controls and decreased responsiveness.

By bleeding the system, any entrapped air is expelled, allowing for a more direct transfer of force through the hydraulic fluid. This ensures that the system operates smoothly and at its optimal performance level. Proper bleeding is essential, especially after maintenance or fluid changes, to maintain system integrity and effectiveness.