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[4] OIL REPLACEMENT IN SLEWING REDUCTION GEAR CASE
The drain plug of the slewing reduction gear case is located directly underneath the machine.
Place the outriggers and raise the machine 50mm from the ground to allow a drain pan to be
placed under the machine for draining oil. If the machine becomes unstable and wobbles, insert
supports under the front and back of the machine to gain stability.
CAUTION
• See “Maintenance 5.1 Use of Lubricating Oil According to Temperature” for which oil to be
used.
• Use seal tape, etc. at the thread of the filler plug to stop the oil leak and securely tighten the
plug after refilling with the oil.
• Oil drain pan: A 1-liter container
• Quantity of oil for replacement: 0.6L
1. Place the machine on a level surface.
2. See “Operation 2.14 Outrigger Setting Operation” to rotate the
rotary of the all outriggers outward.
Check the following before crawling under the machine:
• Ensure that the outriggers are extended at the maximum.
• Visually check the level to make sure the machine in a
horizontal position.
• Insert solid blocks between the crawler and the ground to
keep the machine raised.
3. Remove the filler plug (F) from the slewing reduction gear case.
4. Crawl under the machine and place a drain pan directly
underneath the drain plug (P) of the slewing reduction gear case
to receive drained oil.
5. Remove the drain plug (P) slowly to drain the oil, keeping from
contact with draining oil.
6. Check the drained oil. If check finds a considerable amount of
metal powder and foreign objects, contact our sales service
agency.
7. Put in the drain plug (P) and secure it.
8. Supply the gear oil to the slewing reduction gear case through
the filler plug (F).
NOTES
• The gear oil must be filled from the filler cap , up to the midpoint
of the site gauge (G).
• Wipe off the oil completely if spilled.
9. Put in the filler plug (F) and secure it after oil replacement.
10. See “Operation 2.24 Outrigger Stowing Operation” to stow the
outriggers.
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