Komatsu WA380-8, Operation & Maintenance Manual

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Check that the hydraulic oil is at the specified level. For details, see “METHOD FOR CHECKING OIL LEV-
EL IN HYDRAULIC TANK, ADDING OIL (4-42)”.
18. Check the filter cover mount for oil leakage.
19. Install cover (1).
METHOD FOR REPLACING HYDRAULIC TANK BREATHER ELEMENT
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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.
• When removing the oil filler cap, the oil may spout out. Turn it slowly to release the internal pres-
sure, then remove it carefully.
1.
Before removing the breather, wipe off dirt and dusts
around it.
2.
Loosen the bolts and remove the cover.
3.
Remove the cap of oil filler port (F).
4.
Remove snap ring (2) of breather (1), remove breather cap
(3), and replace filter element (4) with a new one.
5.
Install breather cap (3) and snap ring (2).
6.
Close the cap of oil filler port (F).
METHOD FOR CHANGING OIL IN AXLE CASE
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WARNING
• When changing the oil, apply the parking brake and secure the front and rear frames with the frame
lock bar.
• 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.
• If the plug is removed, oil may spurt out, so turn it slowly to release the internal pressure, then re-
move it carefully.
Refill capacity of oil: 40 ℓ (both of front and rear)
Items to be prepared
• Container to catch drained oil
MAINTENANCE MAINTENANCE PROCEDURE
4-59