Golden Dragon XML6125CLE Repair Manual Download

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Wheel and Tyre

WT-5

Tyre sidewall is the rubber layer on the side walls of the tyre body between tyre shoulder and tyre bead. It

mainly works to connect and support the tyre body and protect the tyre body from mechanical damages.

Tyre bead
Tyre bead is the tyre part installed on the wheel rim and mainly works to prevent the tyre from being

detached from the wheel rim.

Tyre tread
Tyre tread is the tyre part in direct contact with the ground. Tyre tread has different types or forms of

patterns to accommodate different road surface conditions. Tyre tread patterns are used for driving,
towing, braking, water discharging, anti-skidding and turning purposes. It includes central part in contact
with the ground and tyre shoulders.

Ply cord of tyre body
Tyre body is the frame of a tyre. It mainly creates an air cavity shrouding the inside of the tyre and

bearing tyre loads. Full-steel-cord radial tyres are furnished with steel ply cords and diagonal tyres are
furnished with high-performance nylon ply cords.

Inner liner
For tubeless tyres, one special layer of rubber materials with sound sealing effects which is called inner

liner is furnished inside the tyres. It works to prevent air leakage.

Belt layer
Steel cord belt layer is a special structure of a radial tyre. It is located between tyre body and tyre tread

and covers the whole traveling surface of the tyre. It consists of steel cords and can bear a high load. It
helps to intensify the strength of the tyre tread, buffer impacts from road surfaces and increase the
traveling speed and puncture resistance of the tyre.



Tyre classification

Tyres are divided into tube-containing tyre and tubeless tyre
based on makeup;

Tyres are divided into diagonal tyre and radial tyre structurally;

Tyres are divided into high-pressure tyre, low-pressure tyre and
ultralow-pressure tyre based on the air pressure inside;

Tyres are divided into cotton ply cord tyre, synthetic yarn tyre,
nylon tyre, steel cord tyre, polyester tyre, etc based on the
materials of ply cords.



Radial tyre and diagonal tyre

The ply cords of radial tyres are arranged in the way the meridian lines of the earth are arranged. The belt
layer of the tyre crown consists of circumferentially arranged steel ply cords that can hardly be stretched.
These cords are just like the extension of tank tracks on the road. This structure gives the fullest rein to
the ply cords. It saves oils and resists wear and tear with highly limited circumferential and lateral slips. It
features excellent performance and is applicable for expressways or ordinary highways with sound
surface conditions. As radial tyres have a thin tyre sidewall that is easily punctured, they are not
applicable for traveling on roads with poor surface conditions for the long term.

Diagonal tyres are made of nylon ply cords. Their ply cords constitute a certain angle (30~45°) to the tyre

circumference. This type of tyres is applicable for a wide range of roads. They sink only slightly under
heavy loads and can satisfy the working requirements at a moderate speed. They can be easily repaired and
maintained.



Tube-containing tyre and tubeless tyre
Tubeless tyre has one special rubber layer on the inner liners of the tyre and a layer of airtight materials at

Golden Dragon XML6125CLE, Repair Manual

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