Komatsu ecot3 WA430-6 Operation & Maintenance Manual page 160

OPERATION
CHECK COOLANT LEVEL, ADD COOLANT
Do not open the radiator cap unless necessary. When checking the coolant, always wait for the engine to cool down and check
the sub-tank.
Immediately after the engine is stopped, the coolant is at a high temperature and the radiator is under high internal pressure.
If the cap is removed to check the coolant level in this condition, there is a hazard of burns. Wait for the temperature to go
down, then turn the cap slowly to release the pressure and remove it carefully.
When adding coolant, use the step and handrail provided. Support your body securely.
1. Open cover (1) of the platform on the right side of the machine.
2. Check that the coolant level is between the FULL and LOW
marks on radiator sub-tank (2). If the coolant level is low, add
coolant through the coolant filler of sub-tank (2) to the FULL
level.
3. After adding coolant, tighten the cap securely.
4. If sub tank (2) is empty, check for coolant leakage, then check
the coolant level in the radiator. If the coolant level is low, add
coolant to the radiator, then add coolant to sub tank (2).
If the volume of coolant added is more than usual, check for
possible leakage.
Confirm that there is no oil in the coolant.
WARNING
CAUTION
OPERATION
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