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Cooling & Raw Water Systems
3 Docs
How Do I Know if My Marine Heat Exchanger Needs Cleaning?
Last Updated: September 28, 2026How Do I Know if My Marine Heat Exchanger Needs Cleaning? A marine diesel heat exchanger allows engine coolant to transfer heat into the vessel’s raw-water system. Over time, the seawater side of the heat exchanger can accumulate material that reduces both water flow and heat-transfer efficiency. What Builds Up Inside a Marine Heat Exchanger?...
What Happens When a Marine Raw-Water Impeller Fails?
Last Updated: September 28, 2026What Happens When a Marine Raw-Water Impeller Fails? The raw-water impeller is a relatively small part, but it performs one of the most important jobs in a marine diesel cooling system. Its job is to pull seawater into the cooling circuit so heat can be removed from the engine. When the impeller begins to fail,...
Why Is My Marine Diesel Engine Overheating?
Last Updated: September 28, 2026Why Is My Marine Diesel Engine Overheating? Marine diesel overheating can result from insufficient raw-water flow, poor heat transfer or a problem within the engine’s closed-loop cooling system. Because several components work together to control engine temperature, overheating should be diagnosed as a complete system rather than by simply replacing one component. Common Causes of...