Workshop Manual

009W2329-R01
O9
Thermostate
For controlling the cooling water temperature the cooling water system is fitted with a
thermostate.
Dependent on the cooling principle the thermostate has different opening temperatures.
In case of direct seawater cooling the thermostate has an opening temperature of 50°C.
In case of freshwater cooling the thermostate has an opening temperature of 80°C.
In case of freshwater cooling with keel cooler the thermostate has an opening temperature
of 80°C.
Direct seawater cooling thermostate No. 008E6587.
Freshwater cooling with heat exchanger thermostate No. 033D1202.
Freshwater cooling with keel cooler thermostate No. 030G6601.
In all three cases the thermostate is placed at the exhaust manifold astern in starboard side of
the engine.