Komatsu HB215LC-3, Operation & Maintenance Manual

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2.
Remove the cap of hydraulic tank oil filler port (F), and re-
lease the internal pressure.
3.
Loosen the bolts (6 pieces) and remove the cover (1).
The cover may jump out under the force of spring (2). Hold the cover down when removing the bolts.
REMARK
If the cover (1) is left approximately 5 minutes with the
mounting bolts loosened, the internal pressure of the case
is released and the oil in the element is drained, and ac-
cordingly less oil drips when the element is removed.
4.
After removing the spring (2), valve (3) and strainer (4),
take out the element (5).
5.
Check the bottom of the filter case for dirt or other materi-
al, and remove any if found.
Take extreme care that the dirt does not fall into the hy-
draulic tank.
6.
Clean the removed parts by using the flushing oil.
7.
Install the new element in the place where the old element (5) has been installed.
8.
Place the strainer (4), valve (3) and spring (2) onto the element.
9.
Set the cover (1) in position, press it down by hand, and install the cover with the mounting bolts.
10. Install the oil filler cap.
11. Start the engine and run it at low idle for 10 minutes to bleed air.
12. Stop the engine.
REMARK
Leave the machine as it is for at least 5 minutes, and then start the operation. This will remove the air bub-
bles in the oil inside the tank.
13. Check that there is no leakage of oil and wipe off any oil that is spilled.
CHANGE OIL IN SWING MACHINERY CASE AND ELECTRIC SWING MOTOR
CASE
k k
WARNING
• Immediately after the engine is stopped, its parts and oil are still very hot, and may cause burn in-
jury. Wait for the temperature to go down, and then start the work.
• Park the machine on a firm level ground and change oil.
Change the oil in the swing machinery case and electric swing motor case according to the following table.
Item Type of oil Refill capacity
Replacement or cleaning
interval
MAINTENANCE PROCEDURE MAINTENANCE
4-62