METHOD FOR FLUSHING HEAVY EQUIPMENT HYDRAULIC SYSTEMS

摘要

A method for flushing a hydraulic system (20) of a heavy equipment piece. A first step of the process is to open a drain port (50) in a hydraulic system (20) of the heavy equipment piece and drain used hydraulic fluid therefrom and into a waste reservoir (55) that is maintained exterior to the equipment piece itself. A cleaning solution is then injected into the hydraulic system (20) that purges remaining undrained hydraulic fluid from the system (20) and into the waste reservoir (55). During this stage, the draining and purging fluids are monitored and it is detected when used hydraulic fluid ceases to flow from the system (20) and when cleaning solution subsequently begins to flow from the hydraulic system (20). When this situation is detected, the drain port (50) is closed and cleaning solution that continues to be injected is retained within the hydraulic system (20). The accumulated cleaning solution is ultimately evacuated from the hydraulic system (20) and fresh replenishing hydraulic fluid is injected into the hydraulic system (20). The equipment piece may then be placed back into service with fresh fluids and usually improved performance.