Section 5 – PERIODIC MAINTENANCE
Mini-Crawler Crane M A E D A
5-32 9/2020 MC285CB-3
Replace Oil in Slewing Reduction
Gearcase
WARNING! The drain plug of the slewing
reduction gearcase is located directly
underneath the machine.
To drain oil, use outriggers to raise the rubber
track about 80 mm, allowing access under the
machine. If the machine becomes unstable
and wobbles, insert supports under the front
and back of the machine to gain stability.
CAUTION: See “LUBRICATING OIL” on page
5-7 for the oil to be used.
CAUTION: Use seal tape, etc. at the thread of
the drain plug and filler plug to stop the oil
leak and securely tighten the plugs after
changing the oil.
• Oil drain pan: Prepare a container of at least 1 L.
• Oil replacement quantity in slewing reduction
gearcase: 0.6 L
1． Place the machine on a level surface.
2. See “OUTRIGGER SETTING” on page 4-43
to set outriggers and raise the machine about
80 mm above the ground.
3. Place a drain pan directly underneath the
drain plug (P) of the slewing reduction
gearcase to receive drained oil.
Fig. 5-43
4. Turn the drain plug slowly to avoid splashing
oil on yourself, and drain oil.
5. Check the drained oil and if it contains an
unacceptable amount of metal particles or
foreign matter, contact our sales service
agency.
6. Install a drain plug.
7. See "OUTRIGGER STOWING" on page 4-53
to stow the outriggers.
8. See “Removing Machinery Cover” on page
5-11 and remove the machinery cover.
9. Remove the filler plug (F) at slewing
reduction gearcase. Fill with gear oil from the
plug hole up to the middle of the gearcase.
Fig. 5-44
NOTE: The height at centre of gearcase is 50 mm
from the top of the filler plug.
50 mm ± (5 mm) is the appropriate oil level.
Fig. 5-45
Do not allow ingress of dust or dirt when
measuring or filling oil.
10. Securely tighten the filler plug after changing
the oil.
11. See “Installing Machinery Cover” on page
5-11 and install the machinery cover.
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