USCG Exam PracticeHydraulics and pneumatics
According to NAVEDTRA 14075 §7-2, what is identified as the leading cause of trouble in hydraulic systems?
- A. Water contamination causing corrosion of the reservoir
- B. Air trapped in the system causing spongy operation
- ✓ Dirt scoring pumps and valves and jamming close-fitting spoolsCorrect
- D. Overpressure events caused by improperly set relief valves
Why C is correct
NAVEDTRA 14075 §7-2 explicitly states that dirt is the leading cause of hydraulic trouble because it scores pumps and valves and jams close-fitting spools. Water and air contamination are also cited as causes of spongy or erratic operation, and relief valve issues are mentioned, but dirt is identified as the primary cause.
Cited:NAVEDTRA 14075 §7-2