TP-6773 5/12a16 Section 3 Cooling System
3.2.5 Closed Heat Exchanger
A closed heat exchanger is the best cooling method for
most applications. See Figure 3-6 for a typical
installation. Provide space to access the water-cooled
exhaust manifold pressure cap.
Seawater
Freshwater (Coolant/Antifreeze)
1
2
8
10
9
11
12
7
6
5
4
3
1. Engine block
2. Thermostat
3. Engine-driven water pump
4. Engine-driven seawater pump
5. Seawater strainer (customer-supplied)
6. Seacock (customer-supplied)
7. Intake strainer (customer-supplied)
8. Water-cooled manifold
9. Exhaust mixer elbow
10. Heat exchanger (located inside manifold)
11. Silencer (customer-supplied)
12. Exhaust outlet (customer-supplied)
Figure 3-6 Typical Closed/Heat Exchanger Cooling System