4-1-10-izmerenie-vysoty-risunka-protektora.html
4.1.10. Measurement of height of drawing of a protector
|
THE NOTE
To make gaugings for definition of height of drawing of a protector follows in the basic dredging of a protector.
Not to measure on TWI (Tread Wear Indikator means. The indicator of deterioration of a protector).
|
To measure height of drawing of a protector follows in the basic dredging of a protector in the most strongly worn out places of the tyre. Positions of indicators of deterioration of a protector are visible on a protector shoulder.
Instead of TWI the badge D or „a firm logo manufacturer can be specified.
Ledges of the indicator of deterioration of a protector have height of 1,6 mm. This size is the minimum depth of drawing of the protector, ordered in Germany legislatively.
In other countries other norms can operate.
|
|
Fig. 4.5. Indication of deterioration of the tyre: A – labels of the indicator of deterioration of a protector in the basic flutes of a protector; B – the basic flutes of a protector with labels of the indicator of deterioration of a protector
|
Labels of indicators of deterioration of a protector cannot be taken into consideration at measurement. The size in the deepest place of a flute of a protector ( fig. 4.5) is solving .
| 