Maeda MC285C-3 - Replace Oil in Winch Reduction Gearcase

M A E D A Mini-Crawler Crane Section 5 – AUXILIARY WINCH PERIODIC MAINTENANCE
1/2019 MC285C-3 5-85
Maintenance Every 1000 Hours
Replace Oil in Winch Reduction
Gearcase
WARNING! Oil temperature will be elevated
immediately after engine operation. Do not
unplug the inspection port and drain port until
the oil becomes cold.
CAUTION:
• See “LUBRICATING OIL” on page 5-10 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 refiling with the oil.
• Oil drain pan: A 1-litre container
• Hexagonal wrench for plug removal: 8mm
• Quantity of oil for replacement: 0.5L
• Oil drain elbow : NPT1/16
1. Place the machine on a level surface.
2. See “OUTRIGGER SETTING” on page 4-41
to rotate the rotary of the “outrigger [4]”
outward.
3. Rotate the winch slowly to a point where the
oil inspection plug (G) and drain plug (P)
come in sight.
Fig. 5-179
(1) Stop the winch at a point where the oil
inspection plug can be seen through the
post side inspection hole (A).
(2) Stop the winch at a point where the drain
plug (P) of the winch reduction gearcase
can be seen above the inspection hole (B).
4. Use the hexagonal wrench (C) to remove the
drain plug (P).
Fig. 5-180
5. Install the elbow (E) to the screw hole of the
drain plug (P) for draining oil.
6. Place a drain pan (H) directly under the elbow
(E) to receive drained oil.
7. Use the hexagonal wrench (C) to remove the
oil inspection plug (G). The gear oil is drained
from the winch reduction gearcase upon plug
removal.
Fig. 5-181
8. Remove the elbow (E) after the gear oil is
completely drained from the winch reduction
gearcase. Put in the drain plug and secure it.
9. Pump the gear oil through the oil inspection
plug with the use of the oil pump (D).
Fig. 5-182
NOTICE: Pump the gear oil until it exudes from
the oil inspection plug.