TP-6953 7/19 103Section 6 Cooling System
Section6 CoolingSystem
6.1 General
Heat exchanger cooling consists of a heat exchanger
with coolant recovery tank, thermostat, rubber impeller
seawater pump, centrifugal-type engine circulating
pump, water-cooled exhaust manifold, and an exhaust
mixer. See Figure 6-1 for cooling system components.
Seawater
Freshwater (Coolant/Antifreeze)
1
2
8
10
9
11
12
7
6
5
4
3
1. Engine block
2. Thermostat (inside thermostat assembly)
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 6 -1 Cooling System Components, Typical
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