The cooling system of an engine may include such parts as pumps, coolers, radiators, water manifolds, valves, expansion tanks, piping,

Figure 7-4.-Typical cooling system with radiator and fan.

strainers, and instruments. Even though there are many types and models of engines used by the Navy, the cooling systems we have discussed include many of the same basic parts. The design and location of parts, however, may differ considerably from one engine to another. The following discussion points out some similarities and differences found in various parts of engine cooling systems.

The cooling systems of diesel and gasoline engines are similar in many ways, both mechan-ically and in the functions they perform. For these reasons, much of the information that follows is applicable to the cooling systems of both types of engines.