M A E D A Mini-Crawler Crane Section 5 – PERIODIC MAINTENANCE
1/2019 MC285C-3 5-49
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. 5-85
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. 5-86
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
5-14 and install the machinery cover.
Replace Oil in Winch Reduction
Gearcase
WARNING! Oil is at elevated temperatures
immediately after engine operation.
Do not remove the plug of the inspection port
or drain port immediately. Wait until the oil
cools down.
CAUTION: See “LUBRICATING OIL” on page
5-10 for the oil to be used.
CAUTION: When rotating the winch, unstow
the hook.
CAUTION: After oil replacement, use seal tape
for the threaded portion of the oil level
inspection plug and drain plug to stop the
leakage and securely tighten the plugs.
• Oil drain pan: Prepare a container of at least 1 L.
• Allen key to remove a plug: 5 mm
• Oil replacement quantity in slewing reduction
gearcase: 0.5 L
1. Place the machine on a level surface.
2. Rotate the rotary of the No.4 outrigger
outward so that the inspection part of the
winch reduction gearcase of the post side can
be seen.
3. Remove the inspection cover (1) by
unscrewing the mounting bolts (2) (4 bolts).
Fig. 5-87
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