Maeda MC405C-3 - Inspection of Rubber Tracks

Mini-Crawler Crane M A E D A Section 5 – GENERAL MACHINE MAINTENANCE
1/2019 MC405C-3 5-63
• The operation in the very cold land changes the
material of the rubber tracks, shortening its life.
Use the rubber tracks in the range of -25°C to
+55°C, due to the physical property of the
rubber.
• 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. 5-140
• 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. 5-141
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. Ask 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. 5-142
• 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. 5-143
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. 5-144