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December 2019W11/W12/W13 | Operation manual
Should the wheel loader overheat during long road trips or high ambient temperatures, check the following:
ENVIRONMENTAL INFORMATION
Do not harm the environment! Collect escaping fuel and dispose of it in an environmentally friendly manner.
• Is there enough coolant in the cooler and is the coolant mix correct?
• Is the fan belt tensioned and in good condition?
• Are the coolers completely clean throughout?
•Does the fan work?
Check coolant level/top up coolant
The coolant must consist of equal parts of water and antifreeze!
This mixture ensures an optimal ratio between cooling performance and corrosion protection. Do not fill up coolant
quickly when the entire volume needs to be filled, e.g. when replacing the coolant. Fill a maximum of 5 l/min. If the
cooling system is filled too quickly, this may result in air bubbles in the cooling system, leading to engine
overheating.
Scalding hazard due to hot coolant! Never open the cooling system when the engine is hot or under pressure!
Regularly check the coolant level. If you look into the coolant opening from above, the radiator fins must be covered
with liquid. Ensure that sufficient antifreeze is always added to the coolant, even in summer, because the antifreeze
also prevents internal corrosion of the radiator and engine.
Check antifreeze mixture
Replace the coolant every 2 years!
The coolant must consist of equal parts of water and antifreeze! This mixture ensures an optimal ratio between
cooling performance and corrosion protection. Do not fill up coolant quickly when the entire volume needs to be
filled, e.g. when replacing the coolant. Fill a maximum of 5 l/min. If the cooling system is filled too quickly, this may
result in air bubbles in the cooling system, leading to engine overheating.
The antifreeze prevents coolant freezing at temperatures below zero and protects the engine block and radiator
against internal corrosion. Under normal conditions, a frost protection level of -20 °C to -30 °C is sufficient. You can
determine the antifreeze content with the aid of a commercially available antifreeze tester.
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