M A E D A Mini-Crawler Crane Section 5 – PERIODIC MAINTENANCE
1/2019 MC285C-3 5-37
Maintenance Every 100 Hours
Perform this maintenance in tandem with
maintenance every 30/50 hours.
Check Oil Level and Refill Oil in Winch
Reduction Gearcase
WARNING! Oil is at elevated temperatures
immediately after engine operation. Do not
remove the plug of the inspection port
immediately. Wait until the oil cools down.
WARNING! Be sure to stop the engine while
checking oil level or refilling oil.
CAUTION: When rotating the winch, unstow
the hook.
CAUTION: See “LUBRICATING OIL” on page
5-10 for the oil to be used.
CAUTION: Use seal tape, etc. at the thread of
the oil inspection plug to stop the oil leak and
securely tighten the plug after
checking/refilling the oil.
• Allen key to remove a plug: 5 mm
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. Slowly turn the winch and stop it at a position
where the oil inspection plug (G) is visible
through the inspection hole (A) on the post
side.
Fig. 5-56
4. Using the Allen key (C), turn and loosen the oil
inspection plug to check if gear oil exudes
out.
Fig. 5-57
5. If gear oil does not exude out from the oil
inspection plug, slowly turn and take it off,
and refill the gear oil using oil pump (D).
6. Securely tighten the oil inspection plug after
refilling the oil.
Fig. 5-58
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