What must the strainer remain during operation?

What must the strainer remain during operation?

• A. Submerged
• B. Dry
• C. Overboard
• D. Visible

Answer: (A)

Submerged. The strainer sits in the engine’s cooling water intake and its job is to feed the water pump with a steady supply of water. Keeping it underwater ensures the pump stays primed and can draw water continuously, which prevents air from entering the system and avoids cooling loss. If the strainer isn’t submerged—being dry, or above the water line—air can be sucked in, the pump can lose prime, cooling drops, and the engine can overheat. So the correct practice is to keep the strainer submerged during operation.

Submerged. The strainer sits in the engine’s cooling water intake and its job is to feed the water pump with a steady supply of water. Keeping it underwater ensures the pump stays primed and can draw water continuously, which prevents air from entering the system and avoids cooling loss. If the strainer isn’t submerged—being dry, or above the water line—air can be sucked in, the pump can lose prime, cooling drops, and the engine can overheat. So the correct practice is to keep the strainer submerged during operation.