USCG Exam PracticeHydraulics and pneumatics
A junior engineer notices that the hydraulic fluid in a deck winch system has become contaminated with water. According to NAVEDTRA 14075 §7-2, what operational symptom is most likely to result from this condition?
- A. Elevated system pressure caused by reduced fluid compressibility.
- ✓ Spongy or erratic operation of the hydraulic actuators.Correct
- C. Scoring of pump and valve surfaces due to abrasive particles.
- D. Rapid clogging of system filters due to emulsification.
Why B is correct
NAVEDTRA 14075 §7-2 states that water or air contamination causes spongy, erratic operation. Scoring of pumps and valves is attributed to dirt contamination, not water. While emulsification is a real concern, the source specifically identifies spongy and erratic operation as the symptom of water or air contamination.
Cited:NAVEDTRA 14075 §7-2