Dando TERRIER Mk 1, Operating And Maintenance Manual, Page: 263 / 276

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- Avoid extended use of the machine in marine or salty environments since this can cause
the metal core to detach from the rubber.
- The basic characteristics of the rubber used to produce the tracks require that they be
used at temperatures ranging from
– 25°C to + 55°C .
Never leave the tracks exposed to the weather for extended periods of time: abrupt
variations in climate can cause premature aging.
- Wear of the transmission wheels can cause abrasions or cause the metal core to come
out of the track. Replace promptly when this occurs.
OPERATING ANOMALIES AND PROBLEMS
FAILURE OF THE TRACK STEEL CORDS
- Excessive tightening of the track plus use on gravel and loose material that can
accumulate between the track and the carriage.
- Track jumping the guide wheels.
- Strong friction in cases of excessively frequent and rapid changes of direction.
WEAR OR BREAKAGE OF THE METAL CORES
- Excessive tightening of the tracks.
- Improper contact between the notched wheel and the track (notched wheel worn, debris
wedged between tooth and track, etc.).
- Use on sandy terrain.
DETACHMENT OF METAL CORE FROM RUBBER
- Excessive abrasion between the internal side portions of the track and the guide rollers
(excessively frequent and rapid steering and counter steering).
- Harpooning of the notched wheel, wear during rotation.
WARNING !
The above problems require immediate replacement of the damaged track.
ABRASIONS OR LACERATIONS DUE TO FATIGUE OR OUTSIDE FACTORS
- Generally these problems are caused both by the way the machine is used and the
nature of the site where the unit is operating. These lacerations of the track can be
reduced, but not eliminated, by attentive, responsible use of the machine and do not
require immediate replacement of the track, even if it is reaching the end of its life span
and it is time for it to be replaced.
It is best to replace the tracks also when the treads
are reduced to approximately 2 - 5 mm.
- Abrasions, lacerations, cuts on the outer surface of the track (the surface in contact with
the terrain) are, in most cases, due to contact with sharp stones or cutting materials (sheet
metal, glass, nails, brick chips, etc.) which can cut and partially or completely remove parts
of the track. Obviously, because of the properties of the rubber, this is inevitable although
it depends on the specific use and operating conditions.
N.B.: the integrity of the rubber track and the speed with which it is worn
depends mainly on the use and the way the machine is used.