Clean And Inspect Radiator Fins, Oil Cooler Fins, Aftercooler Fins, Fuel Cooler Fins, And Air Conditioner Condenser Fins - Komatsu PC308USLC-3E0 Operation & Maintenance Manual

Hydraulic excavator
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MAINTENANCE PROCEDURE
CLEAN AND INSPECT RADIATOR FINS, OIL COOLER FINS, AFTERCOOLER FINS,FUEL COOLER
FINS, AND AIR CONDITIONER CONDENSER FINS
If compressed air, high-pressure water, or steam hits your body directly or dirt is sent flying by the compressed air, high-pressure
water, or steam, there is danger of personal injury. Always wear protective glasses, dust mask, and other protective equipment.
NOTICE
When using compressed air for cleaning, blow it keeping some distance to avoid damaging the fins. Damage on the fins can cause
water leakage and overheating. In a dusty job site, check the fins every day, regardless of the maintenance interval.
1. Open the engine hood.
2. Loosen screws (1) (located at 6 spots) to pull up each of nets
(2), (3) and (4).
3. After pulling up, clean each of nets (2), (3) and (4).
4. Inspect the front and rear of radiator fins (5), oil cooler fins (6),
after-cooler fins (7), fuel cooler fins (8) and air conditioner
condenser fins (9) for dirt, dust, dry leaves, etc. Blow them
away with com-pressed air, if any. Steam or water may be
used instead of compressed air. However, when carrying out
powerful steam cleaning (high-pressure machine wash) of the
heat exchange equipment (radiator, oil cooler, aftercooler, fuel
cooler, and air conditioner condenser), maintain sufficient
distance from the machine when carrying out the operation. If
steam cleaning (high-pressure machine wash) is carried out at
close range, there is danger that the internal fins of the heat
exchange equipment may be deformed, and this will cause
early clogging and breakage.
5. Check the rubber hose. Replace with a new one if the hose is
found to have cracks or to be hardened by aging. In addition,
check the hose clamps for looseness.
6. After cleaning, insert each of nets (2), (3) and (4) into the
original position and then fasten them with screws (1).
4 - 52
WARNING
MAINTENANCE

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