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Maintenance: Freshwater system
9.
9.
6.
7.
8.
7.
8.
10.
10.
2.
3.
4.
1.
5.
Cooling system D49A/D65A MS HE
The thermostat regulated freshwater system is cooling the lubrication oil coolers, the engine and the charge air
coolers. An engine driven cooling water pump circulates the coolant through the heat exchanger and through the
engine.
The rawwater system cools the internal cooling system in an engine mounted heat exchanger.
1. Rawwater inlet
2. Rawwater pump (optional)
3. Engine mounted
heat exchanger
4. Expansion tank
5. Rawwater outlet
6. Fresh water pump
7. Lubrication oil cooler
8. Engine
9. Charge air cooler
10. Thermostat valve
Freshwater circuit
Rawwater circuit
Freshwater drain points (D)
D
D
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Summary of Contents for D49A MS
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