Rubber Crawler Tracks - Precautions For Use - Grillo DUMPER 507 Manual De Instrucciones, Uso Y Mantenimiento

The truck capacity is 500 kg, but users are advised to consider the terrain on which the vehicle is to be
used when deciding the load which can be transported. Remember that since this is a crawler vehicle,
it pitches considerably on humps, curbs and steps. When crossing such obstacles, use low gears and take
special care; engage a low gear and retain it until back on level ground. If the machine is stopped on steep
slopes, release lever (1, Fig. 1) thus blocking the truck automatically (D, Fig. 7). Although the truck has
rubber tracks, remember to take care in difficult environmental conditions (ice, heavy rain or snow) or on
terrains which might make the vehicle unstable.

RUBBER CRAWLER TRACKS - precautions for use

1) TRACK TENSION (Fig. 6)
1) When the machine is lifted off the ground, the rubber tracks must sag by 10-15 mm as shown in the
diagram.
Fig. 10 - Rubber crawler track tension
2) When the track becomes slack, it must be adjusted to prevent the machine from shedding an
excessively loose track.
2) PRECAUTIONS WHEN DRIVING
1) Avoid jerky operations when the crawler truck is in motion.
2) Keep the rubber crawler track away from sharp edges of concrete etc.
3) Cracks on the outside surface of the rubber track (in contact with the ground) are very often due to
contact with gravel, sharp stones and sharp materials such as sheet metal, nails and glass.
3) AVOID SUDDEN CHANGES IN DIRECTION
Sharp turns on concrete surfaces or excessive accelerations which generate high friction coefficients
must be avoided since they might cause cuts in the rubber.
4) AVOID CONTAMINATION WITH OIL
Fuels and hydraulic fluids must never come into contact with the rubber crawler track. If this should occur,
clean immediately.
5) REPLACING THE SPROCKET
If abrasions and wear are noted on the sprocket, it must be replaced as soon as possible since in these
conditions it might cause abrasion or reveal the metal core.
Worn drive sprocket
6) OPERATING TEMPERATURE
The ideal operating temperature for the rubber crawler track is between -25° and 55° C, because of the
fundamental properties of the rubber.
10 ~ 15 mm.
Fig. 10
THE WORN PARTS ARE
SHOWN BY DOTTED LINES
Fig. 11
11