Granit 7790400001, User Manual

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Beadbreaking
– Tubeless Tyres
WARNING! Do not hold your hands on the
tool when you bring it back to the working
position. There is a danger it being crushed
between the tool and the wheel.
7) Press the lever (19, fig. g) and twist the tool
by 180° until it snaps into place automatically.
8) Place the mobile control unit in working
position D. Repeat the operations described
previously in points 5 and 6 to demount the
second bead.
1) Clamp The wheel on the chuck as described above
and make sure that the tyre is completely vented.
Bring the mobile control unit to working position C.
2) Lower the tool arm (14, fig. f) into the working
position until it is locked into the locking cone.
WARNING! Always make sure that the arm is
properly engaged and locked onto the sledge.
3) Use the joystick to position the (chuck and) wheel
so that the rim edge nearly touches the bead breaking
disk (Fig. f).
WARNING! The disk must not press on the rim, but
on the tyre bead.
4) Rotate the chuck and the wheel and at the same
time move the disk backwards; the disc should follow
the rim profile as far as possible.
5) Proceed until the first bead is completely separated.
To facilitate the process, apply lubricating paste or a
soap solution to the bead and the rim edge while the
wheel is turning.
WARNING! To avoid any danger when lubricating the
beads, rotate the wheel CLOCKWISE when lubricating
on the outside, and COUNTERCLOCKWISE when
lubricating on the inside.
The more the tyre sticks to the rim, the slower the
pression by the disc must be exerted on the tyre.
6) Move the tool arm (14, fig. f) away from the rim horn.
Unlock the tool arm’s locking cone and lift the arm into
the "out of operation" position, twist the tool head it and
lock it in the second working position (Fig. g).