Komatsu PC300LC-8 Operation & Maintenance Manual page 363

MACHINE READY FOR ATTACHMENT MACHINE READY FOR ATTACHMENT
4. Set the lock lever to LOCK position (L).
5. Loosen slowly oil filler cap (F) on top of the hydraulic tank to
eliminate the internal pressure in the hydraulic circuit.
6. Place a container under the filter element to catch the oil.
7. Set a container in position to catch the drained oil, then remove
plug (1) and drain the oil accumulated in filter case (2).
8. Turn filter case (2) to the left, remove it, then take out element
(3).
9. Clean the removed parts, then install new element (3).
Element (3) must be installed facing in the correct direction.
Set direction (Y) with the holes in it facing up, and insert the
hole in element (3) on the protruding portion inside filter
head (4).
10. Install new O-ring (5) to filter case (2), then screw filter case (2)
into filter head (4). When the top of filter case (2) comes into
contact with the filter head, tighten it at least a further 1/2 turns.
11. Clean plug (1), then fit a new O-ring (6) to plug (1).
12. Install plug (1) to filter case (2).
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ATTACHMENTS AND OPTIONS ATTACHMENTS AND OPTIONS