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.MAINTENANCE PROCEDURE
CHECK SWING PINION GREASE LEVEL, ADD GREASE
Prepare a scale.
1. Remove bolts (1) (2 bolts) on the top of the revolving frame
and remove cover (2).
2. Insert a scale into the grease and check that the height of
the grease in the portion where the pinion passes is at least
28 mm. Add more grease if necessary.
3. Check if the grease is milky white. If it is milky white, it is
necessary to change the grease. Please contact your
Komatsu distributor.
The total amount of grease: 10.5 liters (2.8 US gallons)
4. Install cover (2) with bolts (1).
CLEAN AND INSPECT RADIATOR FINS, OIL COOLER FINS, CONDENSER FINS
AND AFTER COOLER FINS
If compressed air, high-pressure water, or steam hit your body directly, or they cause dirt or dust to be
blown up, there is a hazard of serious injury. Always use safety glasses, dust mask, or 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. Loosen screw (3) and pull up net (2).
3. Clean net (2). (it is to be installed again, as instructed in the
step 8.)
4. Loosen the 3 cover bolts at the top on the engine side, then
slide the cover.
5. Inspect the front and rear of oil cooler fins (4), radiator fins
(7), after-cooler fins (8) and condenser fins (9) for dirt, dust,
dry leaves, etc. Blow them away with compressed air, if any.
Steam or water may be used instead of compressed air.
6. Check the rubber hose. Replace with a new one, if the
hose is found to have cracks or to be hardened by aging.
Further, check the hose cramps for looseness.
6. Check the rubber hose. Replace with a new one, if the hose
is found to have cracks or to be hardened by aging.
Further, check the hose cramps for looseness.
4-48
WARNING
MAINTENANCE
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