Section 5 – GENERAL MACHINE MAINTENANSE
Mini-Crawler Crane M A E D A
5-62 3/2019 MC305C-3
• When handling food such as salt, sugar, wheat,
and soybeans, some pieces of wire or rubber
may be mixed in the food if there is any deep
scratch on the rubber tracks.
Use the rubber tracks after repairing the cracked
rubber.
Fig. 5-119
• Always use the rubber tracks at appropriate
tension to prevent the rubber track from coming
off.
Loose tension will allow the rubber tracks to
come off.
Fig. 5-120
Inspection of Rubber Tracks
CAUTION: Contact us or our sales service
agency for determining whether to replace,
repair, or keep the rubber track.
The following condition requires the repair or
replacement of the rubber track. Contact us or our
sales service agency for repair/replacement.
Lug Height
• When the lug height "a" decreases with wear,
the traction force drops.
Replace the rubber track when the lug height
decreases to 5 mm or lower with a new rubber
track.
Fig. 5-121
• When the lug is worn out and the steel cord
inside the rubber track is exposed for more than
2 links, replace the rubber track with a new one.
Fig. 5-122
Broken Steel Cord
If more than half of the steel cord layer is broken
on one side, replace the rubber track with a new
one.
Fig. 5-123
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