M A E D A Mini-Crawler Crane Section 5 – INSPECTION
9/2020 MC285CB-3 5-17
3. If the oil level is low, add hydraulic oil using
the following procedure.
Fig. 5-11
a. Remove the air breather cap (1) from the
oil inlet (F) on the top of the hydraulic oil
tank.
b. Replenish the hydraulic oil via the oil inlet
(F) while watching the oil level gauge (G).
c. After replenishing the oil, securely
reattach the air breather cap (1) on the oil
inlet (F).
For information on how to remove the air
breather cap, see “Air Breather Inspection” on
page 5-49.
Check / Add Slewing Motor Reduction
Gearcase Oil
Before checking or adding slewing motor
reduction gearcase oil, read the maintenance
precautions in “Handling and Service of Gearcase
Oil” on page 5-3.
1. Stop the machine on a level location.
2. See “Removing Machinery Cover” on page
5-11 and remove the machinery cover.
3. Remove the filler port plug (F) from the
slewing reduction gearcase. Fill with gear oil
from the plug hole up to the middle of the
gearcase.
Fig. 5-12
NOTICE: The height at middle of gearcase is
50 mm from the top of the filler plug. 50 mm
(±5 mm) is the appropriate oil level.
Do not allow ingress of dust or dirt when
measuring or filling oil.
Fig. 5-13
4. If the oil level is low, refill with the gear oil
from the plug hole of the filler plug.
5. After adding oil, install the filler plug and
securely tighten.
6. See “Installing Machinery Cover” on page
5-11 and install the machinery cover.
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