Using Rubber Crawler - Hitachi Zaxis 33U-5A Operator's Manual

Using Rubber Crawler

Rubber crawlers are designed to allow the machine to travel
without damaging road surfaces such as paved road surfaces.
Avoid damage to the rubber crawlers by following the
precautions below:
Forbidden Operations
1. Do not operate or steer the machine on or near river-
terrace, boulder and boulder mixed ground, crushed-
stone ground, uneven hardpan surfaces, stumps,
reinforcing bars, scraps, and steel plate edges. Failure to
do so may shorten the service life of the rubber crawlers
to a great extent.
2. Do not leave engine oil, fuel, and other kinds of
lubricants remaining on the rubber crawlers, and avoid
traveling on road surface covered with oil to reduce the
danger of sliding.
3. Do not travel the machine while raising one side crawler
off the ground with the front attachment. Shear or
damage to the rubber crawler may result.
Precautions for Using Rubber Crawlers
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WARNING: The rubber crawler machine is less stable
than the steel crawler machine, as the edge of the
rubber crawler is easier to deform than steel crawler.
Pay attention when operating the machine at an angle
to the tracks.
1. Do not store the rubber crawlers in a place where they
will be exposed to direct sunlight for a period of more
than three months.
2. Avoid unnecessary steering operations on concrete
roads, possibly resulting in premature wear of shoe lugs
and core metals. Also, avoid operating the machine on
high temperature [over 60 °C (140 °F)] road surfaces
during asphalt pavement work, possibly causing
premature wear of the rubber crawlers as well as
damage to the road surface.
OPERATING THE MACHINE
5-20
M1M7-05-015
M1M7-05-016