On Board with Mark Corke: Changing a water pump impeller

Changing a water pump impeller is normally a straightforward job that every voyager should be able to tackle. Impeller pumps are far more common than you might imagine and are used for everything aboard from bilge pumps to shower pump and freshwater wash down. Generally they can be relied upon to work without incident for many months or even years but that does not mean they are maintenance free.

In my view one of the most important of these pumps is that used for raw water cooling on the inboard engine. Should this pump fail or work at less than full capacity overheating will result and damage result to the engine.

Read the complete blog entry.