Original Operating Manual - ROPA Fahrzeug

7 Maintenance and Care
Chapter 7
Maintenance and Care
2
Expansion tank for coolant for euro-Maus4
Warning! As long as the engine is hot, the cooling system is subject to high pressure.
There is a risk of burns due to escaping steam or hot coolant spraying out! Wear
protective gloves and protective goggles. Open the filling cover (1) on the engine cooling
system carefully when the engine has cooled down.
Check coolant level and corrosion protection agent/antifreeze and, if needed,
correct
Only check the coolant level at a coolant temperature of below 50 °C. Before correcting
the coolant level, check corrosion protection agent/antifreeze.
To check the coolant level, slowly and carefully open the filler cover (1) of the engine
cooling system. Slowly relieve any excess pressure.
Check corrosion protection agent/antifreeze using a tester.
The correct ratio of 50 % by volume of corrosion protection agent/ antifreeze in the
coolant has been reached when there is protection against freezing down to -37 °C.
Correct the mixing ratio if less antifreeze is indicated.
If the concentration is too low, there is a risk of damage to the engine due to corrosion/
cavitation in the cooling system!
Avoid concentrations of more than 55 %by volume of corrosion protection agent/
antifreeze since, otherwise, maximum protection against freezing down to -45 °C is not
reached.
The cooling system is correctly filled if the coolant reaches as far as just below the lower
edge of the filler opening.
Only use prepared coolant with 50 % by volume of corrosion protection agent/antifreeze
that has been expressly approved by Mercedes-Benz for refilling.
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1
(1) Filler cover
(2) NEVER OPEN!