What does a dry-run test verify before introducing fluids?

• A. Tests fluid compatibility.
• B. Determines color of components.
• C. It verifies clearances, movements, and fit without fluids before full operation.
• D. Checks battery voltage.

Answer: (C)

A dry-run test checks that the system’s moving parts operate correctly with no fluids in the lines. It verifies that clearances are correct, components travel through their intended paths, and the fit between parts is right. By cycling the mechanism—like pumps, actuators, and valves—without fluids, you can catch binding, misalignment, or interference that would cause damage or improper operation once fluids are added. This step helps ensure mechanical integrity before introducing fluids.

Other aspects like fluid compatibility are assessed later, color of components is irrelevant, and electrical checks such as battery voltage pertain to different systems.