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MAINTENANCE
2.
Remove bolts (3) (2 pieces) on the top of the revolving
frame to remove grease filler port cover (4).
3.
Check that grease is filled.
4.
Check that the grease is not milky white.
Total amount of grease: 5.5 ℓ
If the grease is milky white, it needs to be replaced. Ask
your Komatsu distributor to replace it.
5.
Install grease filler port cover (4) with bolts (3).
6.
Install cover (2) with bolt (1).
METHOD FOR LUBRICATING SWING CIRCLE
Prepare a grease pump.
1.
Lower the work equipment to the ground.
2.
By using a grease pump, apply grease to the grease fit-
tings marked by arrows (2 places).
3.
After greasing, wipe off any old grease that is pushed out.
METHOD FOR CHECKING AND CLEANING RADIATOR FINS, OIL COOLER FINS,
AFTERCOOLER FINS, FUEL COOLER FINS, AND AIR CONDITIONER CONDENS-
ER FINS
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 personal
protective items such as protective eyeglasses and dust mask.
NOTICE
•
When using compressed air for cleaning, blow it keeping some distance as perpendicular to the
core as possible to avoid damaging the fins. Damage on the fins can cause water leakage and over-
heating.
•
In a dusty job site, check the fins every day, regardless of the maintenance interval.
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WARNING
WENAM00042
MAINTENANCE PROCEDURE
4-59
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