Komatsu PC400LC-5 Operation & Maintenance Manual page 205

24.6.3 CLEAN AND INSPECT RADIATOR FINS, OIL
COOLER FINS
a
WARNING
If compressed air, steam, or water hit your body directly, there
is danger of injury. Always wear protective glasses, mask, and
safety shoes.
1.
2.
3.
Open the engine hood and rear door on the left side of the
machine.
Blow off mud, dust or leaves clogging the radiator fins, oil cooler
fins using compressed air.
At the same time, clean the net in front of the oil cooler.
Steam or water may be used instead of compressed air.
Check the rubber hose. Replace with a new one if the hose is
found to have cracks or to be hardened by ageing.
Further, check hose clamps for looseness.
NOTICE
To prevent damage to the fins, apply compressed air from and
appropriate distance. Damaged fins may cause water leakage or
overheating. In a dusty site, check the fins daily, irrespective of the
maintenance interval.
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