Komatsu PC18MR-3, Operation & Maintenance Manual

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USE OF THE MACHINE AND RELATED CONTROLS
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3.3.1.2 CHECKS TO BE CARRIED OUT BEFORE STARTING THE ENGINE
Carry out the checks listed below every day before starting the engine.
CHECKING THE COOLANT LEVEL AND TOPPING UP
WARNING
q
Do not remove the radiator cap, unless such operation is absolutely necessary. Before checking the
coolant level, wait for the engine to cool down and check the expansion tank.
q
Immediately after the engine has stopped, the coolant is very hot and under pressure. Removing the cap
in these conditions to check the coolant level may cause a burn hazard. Before removing the cap, wait
until temperature is reduced and loosen the cap slowly to release the remaining pressure.
1. Open the radiator cover. For details, see paragraph "3.2.7
RADIATOR COVER"
2. Make sure that the coolant level is included between the
FULL and LOW marks on the expansion tank (1). If the level
is low, top up through the filler neck of the tank (1), until
reaching the FULL mark.
3. Put back the cap after topping up.
4. If the expansion tank is empty, make sure that there are no
leakages and check the coolant level in the radiator. If neces-
sary, add coolant in the radiator and also in the expansion
tank.