Komatsu WA800-3E0, Operation & Maintenance Manual

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MAINTENANCE
SERVICE PROCEDURE
4-31
CLEAN RADIATOR, OIL COOLER, AFTERCOOLER FINS 4
WARNING
If compressed air, high-pressure water, or steam hits your body directly or dirt is sent flying by the com-
pressed air, high-pressure water, or steam, there is danger of personal injury. Always wear protective
glasses, dust mask, and other protective equipment.
Carry out cleaning if any dirt or mud is seen stuck to the radiator, oil cooler, or aftercooler fins.
1. Stop the machine on horizontal ground and turn the park-
ing brake switch ON.
2. Stop the engine.
3. Open door (1) at the side of the radiator guard, insert the
nozzle between oil cooler (2) and radiator assembly (3),
and use compressed air to blow out the mud or dirt out to
the front and rear of the machine.
4. If the mud or dirt cannot be removed from aftercooler (4),
open door (5) of the engine hood and use compressed air
to blow the mud and dirt off.
5. Finally, use water to flush out the mud or dirt collected
inside radiator assembly (3).
NOTICE
If steam jet nozzle (6) is brought to close to fins (7) of the
radiator, oil cooler, or aftercooler, there is danger that the
fins may be damaged, so keep a good distance away when
cleaning.
Use the following conditions as a guideline when washing.
Jet pressure (A): Max. 9.8 MPa {100 kg/cm
2
}
Nozzle diameter (B): Max. diameter 2 m
Distance (C) between nozzle and fin: Min. 100 mm
REMARK
Steam or water can be used instead of compressed air.