Komatsu PW98MR-10, Operation & Maintenance Manual

Page: 357 / 446

7.
Check the front and rear surfaces of oil cooler fins (7), ra-
diator fins (8), aftercooler fins (9), air conditioner condens-
er fins (10), and fuel cooler fins (11). If there is any mud,
dirt, or leaves stuck to the fins, blow it off with compressed
air.
NOTICE
Steam or water may be used instead of the com-
pressed air. However, when performing powerful
steam cleaning (high-pressure machine wash) of the
heat exchange equipment (radiator, oil cooler, after-
cooler, fuel cooler, air conditioner condenser), main-
tain sufficient distance from the machine when per-
forming the work. If steam cleaning (high-pressure ma-
chine wash) is performed 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 equipment.
8.
Remove clamp mounting bolt (12) of the air conditioner
hose.
9.
Remove condenser mounting bolts (13) (2 places) on the
counterweight side.
10. Loosen condenser mounting bolts (14) (2 places) on the
cab side.
11. Spread and clean the condenser.
NOTICE
At this time, take care that forces are not applied to the
tube part of the air conditioner hoses.
If any tube part is broken, the refrigerant is released
and the air conditioner does not work.
12. Check the rubber hoses and check the hose clamps for looseness.
If the rubber hoses are cracked or fragile, replace them.
If the hose clamps are loosened, tighten them.
13. After inspecting and cleaning, install net (6) as it was.
METHOD FOR CLEANING AIR CONDITIONER FRESH/RECIRC FILTERS
k k
WARNING
• When using compressed air, there is a danger that dirt may scatter and cause personal injury. Al-
ways wear personal protective items such as protective eyeglasses and dust mask.
• Always check that the slide door is locked at the open or closed position before cleaning FRESH or
RECIRC filter. If the slide door is free, there is a danger that it may suddenly move and catch your
fingers or break the cover.
NOTICE
• As a guideline, the filters should be cleaned every 500 hours, but on dusty jobsites, clean the filters
more frequently.
• When washing the floor, take care not to splash water over the filter.
MAINTENANCE MAINTENANCE PROCEDURE
4-53
WENAM00061