Komatsu PC78US-6 Operation & Maintenance Manual page 247

MAINTENANCE
MAINTENANCE PROCEDURE
CLEAN, CHECK RADIATOR FINS, OIL COOLER FINS AND CONDENSER FINS
If compressed air, high-pressure water, or steam hit your body directly, or they cause dirt or dust to be blown up, there is a hazard
of serious injury. Always use safety glasses, dust mask, or other protective equipment.
NOTICE
When use the compressed air, keep a distance from air nozzle, to prevents damage to the fins.
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.
4 - 63