Komatsu HB215LC-3, Operation & Maintenance Manual, Page: 397 / 492

14. Turn the valve (1) at the lower part of the fuel tank to
OPEN position (O).
15. Install the drain hose.
16. Fill up the fuel tank with fuel (to the level where the float is
at the highest position).
17. Loosen the knob of feed pump (7), pull it out, then pump it
in and out until the movement becomes heavy.
It is not necessary to remove the plugs at the fuel prefilter
head and at the fuel main filter head.
When the engine runs out of fuel, use the same procedure
to operate the feed pump (7) and bleed the air.
18. After bleeding air, push in the knob of feed pump (7).
19. After replacing the filter cartridge, start the engine and run
it at low idle for 10 minutes.
20. Check for leakage from the filter seal surface and transpar-
ent cup mounting face.
If any leakage is found, check the filter cartridge for its tightening condition.
If leakage is still found, repeat the steps 1 to 6 to remove the filter cartridge, and if any damage or pinched
foreign material on the packing surface is found, replace it with a new filter cartridge and repeat the steps 7
to 12 to install it.
21. Close the door on the right side of the machine.
METHOD FOR CHECKING SWING PINION GREASE LEVEL, ADD GREASE
Items to be prepared
Scale
1.
Perform the swing 3 times each to the right and left, and stop the machine.
2.
Remove the bolts (1) (2 pieces) on top of the revolving
frame, and remove the cover (2).
MAINTENANCE MAINTENANCE PROCEDURE
4-53