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TYRES
HOW TO HANDLE TYRES
1 Steel belt cord
2 Radial carcass
3 Bead core
Tyres must be changed for safety reasons, if they have any of the following
defects.
•
The bead core is torn or twisted.
•
Excessive wear and the carcass - with the exception of the
intermediate layer - is exposed over more than 1/4 of the
circumference.
•
Damage to the carcass exceeds 1/3 of the tyre width.
•
The individual layers of the tyre peel from each other.
•
Radial tears in the carcass.
•
Deformation or damage making the tyres unsuitable for use.
TYRE AIR PRESSURE
NOTE
Before starting operation, check the tyre air pressure with the tyres
being cold.
If the tyre pressure is too low, the tyres will be overstrained; excessive
pressure can lead to cracks in the tyres which may result in the tyre
bursting under peak loads. Set the tyre pressure according to the table to
avoid any damage.
VISUAL INSPECTION
As a guideline for visual inspection, the compression ratio of the front
tyres (no load/under load) should be as follows:
When transporting normal loads (boom in horizontal position): approx.
15 - 25 %
For excavation works (rear wheels lifted from ground): approx. 25 - 35 %
Check for cracks, peeling and unusual wear when checking the tyre
pressure. Remove any nails, pieces of metal or other foreign particles.
Remove any rocks or large stones from the working area. Creating a
free surface assists in prolonging the service life of the tyres and, thus,
increases the efficiency of the machine.
4 Intermediate layer
5 Diagonal carcass
6 Bead cores
Operation
2 - 59
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