Volvo Penta D34A MS - Cooling System D34 A MT HE

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Maintenance: Cooling system, general
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1. Rawwater inlet
2. Rawwater pump (optional)
3. Charge air cooler
4. Freshwater pump
5. Lubrication oil cooler
6. Engine
7. Thermostat valve
8. Heat exchanger
9. Expansion tank
10. Rawwater outlet
Cooling system D34A MT HE
The thermostat regulated freshwater system is cooling the engine and the lubrication oil cooler. An engine driven
cooling water pump circulates the coolant through the heat exchanger and through the engine.
The rawwater system is cooling the charge air and the coolant in the freshwater cooling system. The rawwater cir-
cuit is designed for seawater cooling or for connection to a central cooling system.
Freshwater circuit
Rawwater circuit
Freshwater drain points (D)
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