Raw Water Cooling – sample drawings

All drawings taken from Marine Diesel Basics books 

– click on drawings to learn more about each topic

Inspect Rubber Impeller

Cooling Pie Chart

Cleaning Pump Cover

Topics covered
in chapter 4

21 drawings + text

Maintenance – Raw Water Cooling

Main Concerns
Task List
Indirect Cooling (Fresh Water Cooled)
Direct Cooling
Keel Cooling
1  Clean Thruhull of Anti-Foul Paint and Marine Growth
2  Check Emergency Plug Tied to Every Seacock
3  Check Seacock Opens/Closes Smoothly
4  Inspect Raw Water Strainer
5  Service Raw Water Pump & Impeller
6  Check and Change Heat Exchanger Anode(s)
7  Flush and Clean the Syphon Break
Cautionary Tale

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