Komatsu GD555-5 Operation & Maintenance Manual page 282

MAINTENANCE
CLEAN AND CHECK RADIATOR FINS, OIL COOLER FINS, AFTERCOOLER FINS AND
CONDENSER FINS
If compressed air, pressurized water, or steam hits your body directly, or causes dirt to fly, it possibly leads to personal injury.
Always wear safety glasses, dustproof mask and other protective equipments.
When using compressed air for cleaning, make sure the maximum pressure of it is less than 0.2 MPa (2.1 kg/cm2, 30.0 PSI).
Do not open the engine side cover when the engine is running. Before starting to clean, completely stop the engine.
NOTICE
To prevent damage to the fins, apply compressed air from an appropriate distance. Damaged fins may cause water leakage or
overheating. In a dusty site, check the fins daily, irrespective of the
maintenance interval.
1. Remove bolts (1) on the side surface of the hood to take panel
(2) off.
2. Remove bolts (3) on the side surface of the radiator shroud to
take panel (4) off.
3. Check that there is no mud or dirt clogging the radiator fins, oil
cooler fins, aftercooler fins, or condenser fins.
4. Clean the inside by inserting the steam injection nozzle
through the clearances among the radiator, oil cooler,
after-cooler (5), and air-conditioner condenser (6).
Steam or water can be used instead of compressed air. But, make sure to keep a reasonable distance when
performing washing with powerful steam (high-pressure washing) to heat exchange devices (radiator, oil cooler,
after cooler, and air conditioner condenser). If steam washing (high pressure washing) is performed from point-blank
distance, fins inside the heat exchange device may deform which will cause clogging or damage on early stage.
WARNING
SERVICE PROCEDURE
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