Maintenance and care
52
Filling / bleeding the cooling system (only when engine has cooled down)
Fill the cooling system of the engine with a mixture of drinkable tap water and anti-freeze
agent on ethylene glycole basis or anti-corrosion agent.
See Publication “Fuels, Lubricants and Coolants for MAN Diesel Engines”.
Coolant must be added at the filler neck only (À, large cap). When topping up do not
add cold coolant if the engine is still warm from operation.
Ensure that the ratio of water to anti-freeze is correct. Find the cause of the loss of cool-
ant and have it eliminated.
D Remove cap (À, large cap)
D Fill in the coolant slowly
D During the filling operation the liquid−
cooled turbochargers are to be bled.
For this purpose an oval flange with a
bleeder screw Á is located on the rear
side of the turbine housing. This
bleeder screw must remain open until
coolant emerges free of bubbles or until
the coolant level has reached the filler
neck (depending on the installation
situation)
D Let engine run at a speed of 2,000 rpm
for approx. 15 minutes
D Switch off engine, carefully turn cap À
with safety valve to the first detent to
relieve pressure and then carefully re-
move cap and top up with coolant
Caution:
Risk of scalding and burning
yourself!
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