What does hydraulic leak testing involve?

• A. Replacing hydraulic fluid
• B. Checking the hydraulic service pressure only
• C. Checking operation and manually testing at slow speed
• D. Inspecting only the hydraulic hoses for leaks

Answer: (C)

Hydraulic leak testing centers on confirming that the system operates under pressure without leaking, and that leaks don’t appear while the equipment is moved. You energize the hydraulic system and run the escalator or moving walk through its range, then deliberately operate it at slow speed to reveal leaks that only show up when there’s motion or load. While doing this, you watch for seepage at all potential paths—hoses, fittings, seals, cylinders, and the pump—and you monitor that pressure remains stable rather than dropping due to a leak. This approach captures leaks that static checks or simply inspecting hoses might miss, and it ensures safety and reliability before placing the equipment back into full service.