Komatsu GD555-5 Operation & Maintenance Manual page 277

SERVICE PROCEDURE
CLEAN AIR CONDITIONER CONDENSER
Do not wash the condenser with a steam cleaner. There is danger that the condenser could overheat.
If high-pressure water hits your body directly or dirt is sent flying, there is danger of personal injury. Always wear protective
glasses, dust mask, and other protective equipment.
If there is mud or dust on the air conditioner condenser, clean it with water.
If the water pressure is too high, the fins may get deformed. When washing with a high pressure washing machine,
apply the water from a reasonable distance.
WASHING METHOD
Open the engine side cover and wash condenser (1) from the top
of it with water.
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WARNING
MAINTENANCE