F 53 16
Engine cooling system (5)
Checking / topping up coolant
The cooling water level must be checked
when the system is cold. Make sure that
sufficient anti-freeze and anti-corrosion
agent is available (-25°C).
f
When hot, the system is under pressure.
When opening, there is a danger
of scalding!
- If necessary fill in a sufficient amount
of coolant through the open port (A) of
the compensating tank.
Change coolant
f
When hot, the system is under pressure.
When opening, there is a danger
of scalding!
m
Use only approved coolants!
A
As well as changing the coolant, the ra-
diator should be flushed with an ap-
proved cooling system cleaner.
Observe engine's operating instructions!
A
Observe the instructions in the chapter
entitled "Operating substances"!
- Remove the drain screw (B) on the
radiator
and let the coolant drain com-
pletely.
- Reinstall the drain screw (B) and tight-
en properly.
- Fill in coolant through the filling open-
ing (A) on the compensation tank until
the coolant level rises to the centre of
the sight glass (C).
m
The air is only able to escape completely from the cooling system once the engine
has reached its operating temperature (at least 90°C).
Check the fluid level again, top up if necessary.
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