Final answer:
If a hydraulic system develops a leak during operation, it is important to shut down the system immediately and repair the leak before operating it again.
Step-by-step explanation:
If the hydraulic system develops a leak during operation, the correct course of action is to shut down the system immediately. Operating a hydraulic system with a leak can lead to a loss of hydraulic fluid, which can cause a drop in pressure and affect the system's performance. Additionally, the leak may worsen over time and eventually result in a complete system failure. Therefore, it is crucial to address the leak promptly to prevent further damage or potential safety hazards.
Once the system is shut down, the next step is to repair the leak. This should be done before operating the system again to ensure its proper functioning. Ignoring the leak or continuing to operate the system with a known leak is not recommended as it can lead to more significant problems and potential accidents, as well as increased maintenance costs.