Corghi HD 900, Operator'S Manual

Page: 55 / 182

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nglIsh
- Operator's manual HD 900 55
UK
WHEELS WITH AN
INNER TUBE
BEAD BREAKING
WARNING: When deflating the wheel, the
ring nut that fastens the valve must be
unscrewed so that the valve does not
create an obstacle during bead breaking
when it reenters the rim.
Proceed with the bead breaking operations,
proceeding exactly as described for the tube-
less tyres.
For wheels with an inner tube, stop the bead
breaker disc from moving forward immediately
after the bead is detached to prevent damaging
the valve and the inner tube.
DEMOUNTING
1) Move the mobile control unit to work-
ing position C.
2) Tip the tool holder arm out of the operating
position, move it to the outer side of the wheel
and re-attach it in the operating position.
3)
Turn the turntable and move the hook tool for-
ward at the same time, inserting it between the
rim and bead until the latter hooks to the tool.
4) Move the rim about 4-5 cm away from the
tool making sure the bead does not detach
from the tool.
5) Move the hook tool outward so that its red
reference dot is moved near the external rim
edge.
6) Move the mobile control unit to work-
ing position B.
7)
Insert the bead lifting lever (
see Fig. 27
)
between the rim and the bead to the right of
the tool.
8) Keeping the lever depressed, lower the
wheel to bring the rim edge about 5 mm from
the hook tool.
9) Turn the wheel anticlockwise, keeping the
lever depressed until the bead comes out
completely.
10) Move the tool holder arm away from the
operating position.
Lower the turntable until the wheel presses up
against the mobile platform that, when moved
outward slightly, creates the space needed to
remove the inner tube.
11)
Remove the inner tube and lift the wheel
back up.
12) Move the mobile control unit to work-
ing position D.
13) Move the tool holder arm to the inner side
of the wheel, turn the tool 180° and lower the
arm to the working position. Insert it between
the rim and bead and move it until the bead is
near the front edge of the rim (it is recommended
to perform this operation turning the wheel at
the same time).
14) Move the rim about 4-5 cm away from the
tool making sure the bead does not detach
from the tool.
15) Move the mobile control unit to work-
ing position B.
16) Move the hook tool so that its red reference
27