Maeda MC285C-3 - Page 266

Section 5 – PERIODIC MAINTENANCE Mini-Crawler Crane M A E D A
5-50 1/2019 MC285C-3
4. Turn the winch slowly to a position where
both the oil inspection plug (G) and drain plug
(P) can be seen.
Fig. 5-88
a. Stop it at a position where the oil
inspection plug is visible through the
inspection hole (A) on the post side.
b. Stop it at a position where the drain plug of
the reduction gearcase is visible at the
upper part of the inspection hole (B).
5. With the Allen key (C), turn and remove the
drain plug (P).
Fig. 5-89
6. Mount the elbow (E) for draining oil to the
screw hole of the drain plug.
7. Place a container (H) to collect the drained oil
just below the elbow.
8. With the Allen key (C), turn and remove the
oil inspection plug (G). Gear oil in the
reduction gearcase is drained.
Fig. 5-90
9. After gear oil in the reduction gearcase is
completely drained, detach the elbow, and
reinstall the drain plug and securely tighten it.
10. Install the inspection cover (1) and tighten the
mounting bolts (2) (4 bolts).
Fig. 5-91
11. Feed the gear oil through the oil inspection
plug hole using an oil pump (D).
Fig. 5-92
NOTE: Pour in the gear oil until it comes out of the
oil inspection plug hole.
12. After the replenishment of oil, securely
tighten the oil inspection plug.
NOTE: After changing the oil, operate the winch
for 5 minutes to lubricate all parts, without hoisting
load.