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CHAPTER 4 DEMOUNT AND MOUNT TIRE
Note: the operator must be trained and qualified then allow to operate the tire
changer.Need to use the proper device and tools, wear the protective clothes, and
use the proper safety precautions, like goggle, earplug, and safety shoe and so on.
4.1
BASIC PRINCIPLE
In order to avoid damage the rim, especially the alloy rim, when mount and demount the
ire, must use the specified crowbar.
In order to facilitate the removal and protection the tire and rim, between the tire and rim,
at the position which the bead break blade insert to, need to lubricate using industrial
lubricants or soap water.
For certain types of tires, pay attention to the tire wall and the rotation direction marked on
the tire.
The tire size must be suitable for the rim to mount.
Before mount and demount the tire, need to check whether the rim had damage
(deformation or surface of the outside of the rim, rim axial for radial beat is too big,
corrosion or overall wear).
In any case, pay attention to the mounting and demounting request of the special tire from
the tire manufacturers.
When inflate the tire, to increase the pressure uniformly and pay attention to the tire edge
situation.
4.2DEMOUNT TIRE
Deflate the air in the tire completely and
pull out the core. Use the special tool to
detach the weight on the rim. Place the tire
between then bead breaking blade and
tire pressing runner clog(FIG15).
Then
step
down
pedal(FIG3-11) to detach the rim from the
tire. Repeat the same operation on the
other parts of the tire to make the tire
completely detached from the rim.
Move the hexangular shaft to the working position to make the demount tool close to the
rim of the wheel. The cylindrical roller in the demount tool will contact with the external rim
of the rim and the bottom of the demount tool will contact with the surface of the rim.
the
tire
press
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