• Upon demounting, if the tool cannot completely
overturn the tyre bead to allow demounting to
start, the tyre bead may still be, or just have
been, inserted at 180° to the demounting zone.
In this case, it is essential to restore the ideal
condition, with the tyre bead inside the well of
the rim. This operation can be assisted with any
tool you wish (clamp supplied with the machine,
pliers, bead presser or lever) (fig.12A).
• Upon demounting, if the tool cannot keep the tyre
bead engaged to allow demounting to start, the
tyre bead may still be inserted on the underside.
Try using the bead breaker disc in an upward
direction both to break the tyre bead again and
to help maintain a grip on it (fig. 12B).
70
To prevent any rim damage, the plastic insert
under the head (fig. 13) must be replaced every
2 months or sooner, if excessively worn. A spare
insert is supplied with the machine.
12a
Any noise heard when the tool head engages
with the tyre is normal. The noise is caused by
the mechanical return of the tool and not because
the tool has hit the rim. Even if the tool does
touch the rim as the tyre is engaged, this will
not damage the rim in any way. The pressure
applied is very low. If you wish to prevent this
noise, simply press the bead breaker disc harder
against the bead when picking it up.
Bead breaking is well known to be a dangerous
operation. It must be carried out in accordance
with the instructions below.
12b
Wheel for cars, off-road and light commercial
vehicles.
Advice
Information
WARNING
User Manual M 928 ROYAL
13