Heat Exchanger - Volvo Penta D1-13 Workshop Manual

20-0 Engine Information, General
P0007940
46

Heat exchanger

The heat exchanger is located in a housing which is
integrated with the exhaust manifold and thermostat.
Raw water passes through the heat exchanger matrix
and transfers heat from the internal cooling circuit in
the engine (fresh water system) to the outer circuit (raw
water). When the thermostat is closed, coolant is led
through a short, uncooled passage in the heat
exchanger and back to the engine.
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