Komatsu PC30MR-5 Operation & Maintenance Manual page 307

MAINTENANCE
3.
Remove the nut (4) of breather (3), and then remove the
cover (5).
Use a tool when nut (4) is too tight to remove.
4.
Replace the element (6) with a new element.
5.
Install the cover (5) and nut (4).
In order not to damage the threaded portion of nut, tighten
the nut (4) by hand until it is seated, then retighten it 15 to
30 ° by using a tool.
6.
Start the engine.
7.
Set the lock lever to FREE position (F).
8.
Operate the work equipment control levers, and extend the
boom cylinder, bucket cylinder, and arm cylinder to their
stroke end.
Set the work equipment in the posture shown in the figure.
9.
Set the lock lever securely to LOCK position (L).
10. Stop the engine.
11. Tighten the cap of oil filler port (F) on the hydraulic tank se-
curely.
12. Close the dirt cover (1).
13. Start the engine.
14. Set the lock lever to FREE position (F).
WENAM00150
MAINTENANCE PROCEDURE
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