11.
Turn valve (1) at the bottom of the fuel tank to OPEN position (O).
12.
After replacing the filter cartridge, start the engine and run it at low idle for 10 minutes.
13.
Check for leakage of oil from the filter seal surface and transparent cup mounting face.
If any leakage is noticed, check the filter cartridge for its tightening condition.
If there is still fuel leakage, repeat steps 1 to 6 and remove the filter cartridge. If any damage or pinched foreign
material on the packing surface is found, replace it with a new cartridge, and repeat steps 7 to 12 to install it.
METHOD FOR CHECKING SWING PINION GREASE LEVEL, ADD GREASE
Items to be prepared
Scale
1.
Swing 3 times each to the right and left, and stop the machine.
2.
Remove bolts (1) (2 pieces) on the top of the revolving
frame, and remove cover (2).
3.
Insert ruler (3) into the grease through inspection and ad-
justment hole (A). Check that the height of grease (S) in
the area where the pinion passes is at least 25 mm.
Add the grease if the grease amount (S) is less than
25 mm.
4.
Check that the grease is not milky white.
Total amount of grease: 33 ℓ (29.7 kg)
If the grease is milky white, it needs to be replaced. Ask
your Komatsu distributor to replace it.
5.
Install cover (2) with bolt (1).
METHOD FOR CHECKING AND CLEANING RADIATOR FINS, OIL COOLER FINS,
AFTERCOOLER FINS, AND AIR CONDITIONER CONDENSER FINS
WARNING
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
equipment such as protective eyeglasses and dust mask.
MAINTENANCE MAINTENANCE PROCEDURE
4-53
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