Maintenance Notes; Notes Regarding The Engine; Engine Oil; Coolant - Komatsu SK818-5 Operation & Maintenance Manual

MAINTENANCE NOTES

4.2 MAINTENANCE NOTES
Use only Komatsu genuine spare parts.
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Do not mix different types of oil.
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Unless specified otherwise, the oils and the coolant used by Komatsu to fill the tanks before the delivery of the
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machine are the following:
ITEM

Engine oil

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Hydraulic system and hydrostatic transmission oil
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Biodegradable hydraulic system oil
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(only for machines filled with synthetic biodegradable oil
type HEES not of plant origin)
Final transmission oil
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Fuel
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Radiator
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4.2.1 NOTES REGARDING THE ENGINE

4.2.1.1 ENGINE OIL
The engine oil must be selected very carefully, since it lubricates the engine, which is the machineís heart; the
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main maintenance operations required for the engine oil are the following:
1 - daily check of the oil level;
2 - check of the oil pollution degree;
3 - periodical change.

4.2.1.2 COOLANT

The coolant serves to keep the engine at the correct temperature and therefore to ensure optimal operating con-
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ditions; check the coolant level in the expansion tank daily and top up if necessary.
The coolant containing antifreeze is flammable; do not use naked flames near the coolant and do not smoke whi-
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le topping up.
Use only permanent ethylene glycol-based antifreeze with the addition of anticorrosion and antifoam products.
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The antifreeze-water ratio must be 50% (50% antifreeze and 50% water).
The use of permanent antifreeze requires only the routine change. It is not necessary to wash the cooling circuit.
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Use drinkable water and in any case soft water.
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Do not use corrosion inhibitors containing soluble oil, since they damage the rubber couplings.
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The required standards for permanent antifreeze are the following: SAE-J1034 and FEDERAL STANDARD O-A-
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548D.
In case of doubt regarding the compliance of the antifreeze used with the standards, contact your Komatsu Dea-
ler and ask for precise information.
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SPECIFICATIONS
SAE 10W-30
API classification CD
SAE 10W
API classification CD
SHELL NATURELLE HFX-32
SAE 10W-30
API classification CD
Ambient temperature above -10ºC:
ASTM D975 no. 2 diesel oil
Ambient temperature below -10ºC:
ASTM D975 no. 1 diesel oil
Permanent, ethylene glycol-based antifreeze, with corro-
sion inhibitor for protection up to -36ºC.