Table of Contents
Advertisement
MAINTENANCE SCHEDULE TABLE
CLEAN AND INSPECT RADIATOR FINS, OIL COOLER FINS, AFTERCOOLER
FINS, FUEL COOLER FINS, AND AIR CONDITIONER CONDENSER FINS
CLEAN AND INSPECT RADIATOR FINS, OIL COOLER FINS, AFTERCOOLER FINS, FUEL COOLER FINS, AND AIR CONDITIONER CONDENSER FINS:PC220-RA16-92DK00A
If compressed air, high-pressure water, or steam hits your body directly or dirt is scattered by the com-
pressed air, high-pressure water, or steam, there is a danger of personal injury. Always wear protective
eyeglasses, dust mask, and other protective equipment.
NOTICE
When using compressed air for cleaning, blow it keeping some distance to avoid damaging the fins. Dam-
age 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 engine hood (1).
2. Remove screws (3) at two places and pull up net (2).
3. After pulling up net (2), clean it.
(Reinstall it in Step 7.)
4. Check the front and rear surfaces of oil cooler fins (4), radi-
ator fins (5), aftercooler fins (6), air conditioner condenser
fins (7), and fuel cooler fins (8). If there is any mud, dirt, or
leaves stuck to the fins, blow it off with compressed air.
Steam or water may be used instead of the compressed air.
However, when carrying out powerful steam cleaning (high-
pressure machine wash) of the heat exchange equipment
(radiator, oil cooler, aftercooler, fuel cooler, air conditioner
condenser), maintain sufficient distance from the machine
when carrying out the work. If steam cleaning (high-pressure
machine wash) is carried out at close distance, there is a
danger that the internal fins of the heat exchange equipment
may be deformed, and this will cause early clogging and
breakage of the fins.
5. Visually check the rubber hose connected to the heat
exchanger. If it is cracked or become fragile, ask your
Komatsu distributor for replacement.
Also, check the hose clamp for looseness.
6. Remove undercover (9) and blow the mud, dirt, and leaves
out to the outside.
7. Push in cleaned net (2) back to the original place and
secure it with screw (3).
4–52
k
WARNING
MAINTENANCE
Advertisement
Chapters
Table of Contents
