Idiomas disponibles
Idiomas disponibles
Inflation of tubeless tyres requires a higher air flow-rate to allow the beads to pass over
the humps in the rim - see types of profiles of tubeless tyre rims in fig. 31; to provide
this, the internal mechanism of the valve should be removed.
In terms of anchoring of the bead in its seat, the hump (H) and double hump (H2) versions
provide greater safety in use, even if the inflation pressure is slightly lower than recom-
mended.
- Check from the position of the centring ridges that the beads are properly positioned
on the rim, and otherwise deflate, break the beads as described in the relevant sec-
tion, lubricate and turn the tyre on the rim. Repeat the mounting operation described
previously and check again.
- Replace the internal mechanism of the valve.
- Bring the pressure to the operating value by pressing the Inflation button 5 fig. 31.
- Fit the cap on the valve to protect its internal mechanism from dust and ensure an
airtight seal.
- Remove and unload the wheel as described in steps 11-12 of the "MOUNTING" sec-
tion.
- Make sure that the wheel on which the tyre has been mounted is firmly clamped to the
turntable using the centring handle 1 fig. 31. Also make sure that the tool head and the
bead breaker unit are well clear of the working area, if possible in the rest position.
- Connect the Doyfe union of the inflation line 2 fig. 31 to the stem of the inner tube valve,
after removing the cap. Inflate the tyre by pressing the relative Pedal 3 fig. 31 in short
bursts.
The inner tube gradually expands inside the tyre. As this happens, push the inner tube
valve inward to allow the air left between the tube and the tyre to escape; this prevents
deflation and possible damage to the tube.
- Inflate, taking great care that the pressure shown on the Air pressure display gauge 4 fig. 31
NEVER exceeds the pressure levels recommended by the tyre producer.
- Fit the cap on the valve to protect its internal mechanism from dust and ensure an
airtight seal.
- Remove and unload the wheel as described in steps 11-12 of the "MOUNTING" sec-
tion.
Maintaining correct pressure values is of the greatest importance for safe use of the
vehicle.
Insufficient pressure causes overheating and may drastically shorten the life of the tyre; it
reduces roadholding and may cause uneven wear (tread wear concentrated on the shoul-
ders of the tyre) and internal damage, and the tyre may even collapse. It also increases
the vehicle's fuel consumption.
Excessive pressure makes the tyre more liable to damage in case of knocks and causes
uneven wear (wear concentrated along the centre of the tread).
The inflation pressure must be checked regularly, at least every two weeks and before
long journeys, not forgetting the spare wheel.
The pressure must only be checked with the tyres cold, since the pressure increases
when the tyres heat up during use.
68
Inflating tube-type tyres
Inflation pressure
Operator's manual Artiglio 50
