Technical data

Design and function

Flow through aftercooler on TAMD63

1. Aftercooler

2. Heated air from turbocompressor

3. Cooled induction air to engine combustion

chambers

4. Sea water inlet (from sea water pump)

5. Sea water outlet (to heat exchanger)

Flow through heat exchanger TAMD63

1. Expansion tank

2. Hot coolant from engine thermostat housing

3. Coolant to coolant pump inlet side

4. Heat exchanger

5. Sea water inlet (from aftercooler)

6. Sea water outlet (to reverse gear oil cooler)

Thermostat

The engines have a piston thermostat (1) whose

sensor body contains wax. When the engine is cold,

the thermostat keeps the passage to the heat

exchanger completely closed. The coolant is then led

through a by-pass duct straight back to the engine.

As the engine warms up, the wax increases its

volume and the thermostat progressively opens the

passage to the heat exchanger at the same time as

the by-pass duct is closed.

Please refer to the Workshop manual “Technical Data”

page 21 for opening temperatures and colour

markings.

TAMD71, -72. Coolant pump (circulation pump) and

thermostat housing

1. Piston thermostat

Thermostat function, cold engine Thermostat function at operating temperature