Coolant Concentration Checking
Coolant
Concentration Checking - EuroV MBE900
Check coolant concentration as follows:
Warning: HOT COOLANT
To avoid scalding from the expulsion of hot coolant, never remove the cooling system pressure cap while the engine is at operating temperature. Wear adequate protective clothing (face shield, rubber gloves, apron, and boots). Remove the cap slowly to relieve pressure.
- Open the cap on the surge tank slowly, to allow excess pressure to escape. Set the cap aside.
- Before adding coolant, use a suitable tester to check the concentration of corrosion-inhibiting antifreeze. If the concentration is lower than 50% by volume, drain coolant/add antifreeze until the concentration is correct. The coolant mixing ratio is listed in the "Coolant Mixing Ratio" table.
- Check the coolant level and add more coolant if necessary.
- Close and tighten the cap on the surge tank.
Note: Check and
correct the coolant level only when the coolant temperature is below
50°C (122°F).
Note: Concentrations of more than
55% by volume should not be used, as this is the level which affords
the maximum antifreeze protection, down to -45°C (-49°F). Higher concentrations
adversely affect heat dissipation.
Notice: If the concentration of antifreeze is too low, there is a risk of
corrosion or cavitation in the cooling system.
Note: When topping off, use only a pre-prepared coolant mixture
containing a 50% concentration by volume of corrosion-inhibiting antifreeze.
Note: