Startline S 424-S 421-S 521-S 524
Operator manual
155
UK
14 - Bead
. This is the part that joins the tyre to the
rim. The bead point (a) is the inner corner. The spur
(b) is the inner part of the bead. The base (c) is the
area resting against the rim. The groove (d) is the
concave part against which the rim shoulder rests.
Tube type tyres. As a tyre has to contain pressurised
air for a long period of time, an air chamber is used.
The valve for inserting, maintaining, controlling
and restoring pressurised air is, in this case, part
of the chamber.
Tubeless tyres. Tubeless tyres consist of a tyre
with inner sidewall lined with a thin layer of spe-
cial impermeable rubber, called a
liner
. This liner
helps to maintain air pressure in the casing. This
type of tyres must be mounted on specific rims,
on which the valve is fixed directly.
II - Rim (Wheel).
The rim is the rigid metal part
which connects the vehicle hub to the tyre, on a
fixed but non-permanent basis.
Rim profile.
The rim profile is the shape of the
section in contact with the tyre. It is made with
different geometric shapes that serve to ensure:
easy assembly of the tyre (inserting the bead
into the channel); safety on the move, in terms of
anchoring the bead in its seat.
When observing a section of the rim, it is possible
to identify different parts that compose it: a) rim
width – b) shoulder height – c) tubeless anchoring
(HUMP) – d) valve hole – e) ventilation opening – f)
offset – g) central hole diameter – h) connection
hole centre to centre distance i) keying diameter
– j) rim channel.
III - Air chamber (tube type tyres).
The air chamber
is a closed ring-like rubber structure with a valve,
which contains pressurised air.
Valve.
The valve is a mechanical device to inflate/
deflate the tyre and maintain air pressure inside
the air chamber (or tyre in the case of tubeless
tyres). It consists of three elements: the valve
closing cap (a) (to protect the internal mechanism
from dust and guarantee air tightness), an internal
mechanism (b) and the base (c) (the outer lining).
f
g h
i
a
c
b
d
e
j
a
b
c
Summary of Contents for Startline S 421
Page 64: ...64 Startline S 424 S 421 S 521 S 524 Manuale Operatore Montaggio...
Page 77: ...Startline S 424 S 421 S 521 S 524 Manuale Operatore 77 I 18 SCHEMA ELETTRICO GENERALE...
Page 78: ...78 Startline S 424 S 421 S 521 S 524 Manuale Operatore...
Page 79: ...Startline S 424 S 421 S 521 S 524 Manuale Operatore 79 I...
Page 81: ...Startline S 424 S 421 S 521 S 524 Manuale Operatore 81 I Note...
Page 144: ...144 Startline S 424 S 421 S 521 S 524 Operator manual Mounting...
Page 157: ...Startline S 424 S 421 S 521 S 524 Operator manual 157 UK 18 GENERAL WIRING DIAGRAM...
Page 158: ...158 Startline S 424 S 421 S 521 S 524 Operator manual...
Page 159: ...Startline S 424 S 421 S 521 S 524 Operator manual 159 UK...
Page 161: ...Startline S 424 S 421 S 521 S 524 Operator manual 161 UK Notes...
Page 224: ...224 Startline S 424 S 421 S 521 S 524 Manuel Op rateur Montage...
Page 237: ...Startline S 424 S 421 321 S 524 Manuel Op rateur 237 F 18 SCH MA LECTRIQUE G N RAL...
Page 238: ...238 Startline S 424 S 421 S 521 S 524 Manuel Op rateur...
Page 239: ...Startline S 424 S 421 321 S 524 Manuel Op rateur 239 F...
Page 241: ...Startline S 424 S 421 321 S 524 Manuel Op rateur 241 F Notes...
Page 304: ...304 Startline S 424 S 421 S 521 S 524 Bedienungsanleitung Montage...
Page 317: ...Startline S 424 S 421 S 521 S 524 Bedienungsanleitung 317 D 17 ALLGEMEINGER SCHALTPLAN...
Page 318: ...318 Startline S 424 S 421 S 521 S 524 Bedienungsanleitung...
Page 319: ...Startline S 424 S 421 S 521 S 524 Bedienungsanleitung 319 D...
Page 321: ...Startline S 424 S 421 S 521 S 524 Bedienungsanleitung 321 D Anmerkungen...
Page 384: ...384 Startline S 424 S 421 S 521 S 524 Manual Operador Montaje...
Page 397: ...Startline S 424 S 421 S 521 S 524 Manual Operador 397 E 18 ESQUEMA EL CTRICO GENERAL...
Page 398: ...398 Startline S 424 S 421 S 521 S 524 Manual Operador...
Page 399: ...Startline S 424 S 421 S 521 S 524 Manual Operador 399 E...
Page 401: ...Startline S 424 S 421 S 521 S 524 Manual Operador 401 E Notas...