4.1.24. Marks sidewallsы tyres

Fig. 4.29. Marks sidewallsы tyres: 1 – dimension marks; 2 – the manufacturer (the trading name); 3 – designations of drawing of a protector; 4 – a designation бескамерной tyres; 5 – a radial design; 6 – instructions on execution „with rim protection; 7 – manufacture date; 8 – certificate number = a permission designation; 9 – the country-manufacturer; 10 – an internal code of drawing of protector DUNLOP; 11 – DOT – Department of Transportation; 12 – code DOT; 13 – as much as possible safe load and as much as possible admissible pressure of air; 14 – quantity of layers in the middle of a protector and in sidewallsе, and also material instructions; 15 – position of indicators of deterioration TWI (Tread Wear Indicator); 16 – relative service life – wear resistance; 17 – an estimation of efficiency of braking on wet road covering A, B or C; 18 – a firmness estimation to temperatures A, B or C; 19 – instructions on safety of operation or tyre installation; 20 – instructions on „an extralight design; 21 – the ordered direction of rotation of the tyre; 22 – a designation of conformity to standards Inmetro

In качастве an example, in drawing 4.29, the tyre Dunlop SP Sport 9000 is resulted.

Explanatories of marks of tyres look in tables 4.5-4.7.

Fig. 4.30. The rubber gate: 1 – the gate case; 2 – a gate zolotnik; 3 – a cap

Look rice 4.30.

The rubber gate for бескамерных tyres is executed so that герметизировать an aperture in a disk rim. The elastic material of the rubber case strong nestles in a rim aperture.

At the twisted metal gates the rubber lining condenses a joint with a rim. Regional surfaces of an aperture of the gate are simultaneously sealing. Therefore on them there should not be a rust, pollution and damages.

The major problem in the gate is carried out by a zolotnik. He герметизирует also allows to regulate pressure of air. Small тарельчатый the sealant on a zolotnik provides tightness only in that a case if on it there are no pollution and a moisture. In compressors for a rating of tyres there should not be a water and oils.

On the gate the cap should be always fastened. It prevents dirt hit in the gate. At presence of pollution in the gate they, at a tyre rating, would get on a sealant of a plate of the gate and to cause негерметичность.

At each new installation of the tyre it is necessary to replace the gate.

At driving without caps on gates there is a danger hit in them a dirt. It will lead slow спусканию tyres that subsequently can become a tyre source of rupture.

ATTENTION Tightness is provided only at densely fastened cap.