MAINTENANCE NOTES
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4.2.1.2 FUEL
q Always use fuel suitable for the engine. Other fuels with different specifications may damage the engine or
reduce its power.
q Always refuel at the end of the workday.
q When refuelling, make sure that there is no water on the fuel drum cover and take care not to draw condensate
from the drum bottom.
q If fuel runs out, or if the fuel filter has been replaced, it is necessary to bleed the circuit.
4.2.1.3 COOLANT
q The coolant serves to keep the engine at the correct temperature and therefore to ensure optimal operating
conditions; check the coolant level in the expansion tank daily and top up when necessary.
q The coolant containing antifreeze is flammable; do not use naked flames near the coolant and do not smoke
while topping up.
q Use only red permanent ethylene glycol based antifreeze, with corrosion inhibitors and antifoam products,
suitable for aluminium radiators. If pure, dilute with water (50%).
q The use of permanent antifreeze requires only the check of the level and the periodical change of the fluid. It is
not necessary to wash the cooling circuit.
q Use drinkable water and in any case soft water.
q Do not use corrosion inhibitors containing soluble oil, since they damage the rubber couplings.
q In case of doubt regarding the applicable standards for the use of coolant, contact your Komatsu Dealer, who will
supply you with exhaustive and precise information.
