Granit 7790400001, User Manual

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Beadbreaking & Demounting of 3-segments Multipiece/Split
Rim Wheel
1) Clamp The wheel on the chuck as described above. Make
sure that the air is drained from the wheel.
Move the mobile control unit to working position C.
2)
Position the tool arm (14, fig. D) in the working position and
lock it into the clamping cone.
3) Place the disk right next to the rim edge (see fig. W).
4) Rotate the chuck and at the same time press on the bead
to loosen it, following the rim until the first bead is completely
loosened. (Note: Lubricate during the process!). WARNING!
In the case of tyres with inner tubes, the process must be
done very carefully to immediately interrupt the pushing by
the disk as soon as the bead is detached so that the valve
and tube are not damaged.
5) Repeat the process, but move the disk against the split ring
(cf. Fig. z), to free the locking ring, which is then pulled out
with the lever (20, fig. z) or the disk.
6) Remove the split ring.
7) Move the tool arm (14, fig. D) away from the rim edge.
Unlock the tool arm from its cone and lift the arm to the "out
of operation" position. Bring the tool arm to the rear side of
the wheel.
8) Press the release lever (15, fig. D) and twist the tool by
180° until it snaps into place automatically. Lower and re-lock
the arm into the working position.
9) Rotate the chuck and move the disk forward at the same
time, following the rim profile until the second bead is
completely loosened (Note: lubricate). Continue to press the
tyre by running the disk until about half of the bead is removed
from the rim (cf. Fig. k).
10) Put the tool arm into the "out of operation" position.
Move the mobile control unit to working position B.
11)
Move away the platform, until the tyre is completely
detached from the rim. Pay attention to avoid any damage to
the valve.