Corghi A 2024 Manual De Uso página 27

Bead breaking
- Fully defl ate the tyre, removing the valve
(On the A 2024 use lever A fi g.10 to adjust the
rim support in the correct position for the width
of the wheel the bead of which is to be broken.
On the A 2024 adjust the position of the blade
using the lever B, fi g. 10a to suite the tyre size
fi g. 10c.
- Position the wheel as shown in fi g.11 and bring
the bead breaker shoe to the edge of the
rim.
IMPORTANT: During the bead breaking op-
eration, you are advised to keep the table
top closed (locking clamp towards center) (A
fi g.11).
- Press the pedal 10 (fi g.11) to operate the bead
breaker and detach the bead from the rim.
Repeat this operation on the other side of the
wheel.
It may be necessary to break the bead at several
points to free it completely.
After detaching the beads, remove the old
balancing weights.
- Thoroughly lubricate the sides of the tyre
around the entire circumference of the lower
and upper bead to facilitate the demounting
and avoid damaging the beads (fi g.12).
- Tilt the tower backwards by holding the button
in the "locked" position (fi g.13).
- Set the clamps to the open or closed position
(fi g.14). For MTS 24" and A 2024 see fi g.14b.
Place the wheel on the table top (with the narrow
part of the rim structure facing upwards), push
lightly downwards and use the control pedal
to lock the wheel in position (fi g.13).
- Tilt the tower forward again (fi g.15). Release the
locking button (release the lever on the A 2005)
to free both the vertical slide and the swing arm
(fi g.15a) and to set the mounting/demounting
device in the correct position against the edge
of the rim (fi g.16).
IMPORTANT: when the button is pressed (or
the lever turned anti-clockwise on the A 2005),
this will simultaneously lock both the vertical
slide and the swing arm, with the mounting/de-
mounting vertical slide moving slightly up and
away from the edge of the rim (fi g.16a).
This space between the rim and the vertical
slide will be maintained for as long as the
button is in the locking position.
The operator can tilt the tower freely (eg. when
demounting wheels of the same size)
without repositioning the vertical slide.
- Insert and position the bead lifting tool on the
Operator's manual MTS 20" - MTS 24" - A 2024
mounting vertical slide (fi g.17).
When working with alloy wheels or wheels with
delicate paintwork, you are advised to remove
the bead lifting tool before proceeding with the
demounting.
WARNING
Grip the bead lifting tool fi rmly during use.
- Raise the upper bead to above the rear part
of the demounting vertical slide (fi g.17a) and
force part of the upper bead into the rim groove
by pushing down on the side wall of the tyre
nearest to the operator.
- Press the pedal to turn the table top clockwise.
The upper bead will automatically be guided
up and over the rim (fi g.18).
Repeat the last three points to detach the lower
bead.
- Tilt the tower backwards.
NOTE: If the tyre has an inner tube, after detaching
the upper bead, tilt the tower back and remove
the inner tube before proceeding to demount
the lower bead.
The rotation of the table top can be stopped at
any time by releasing the pedal.
To rotate in the opposite direction, simply raise
up the pedal.
TYRE MOUNTING
WARNING
Always check that the size of the tyre is compat-
ible with the size of the wheel before proceeding
with mounting.
- Before you start with tyre mounting opera-
tions, apply a liberal amount of tyre manufac-
turer approved rubber lubricant to both beads
(fi g.19).
Lubricated beads require less force to mount/
seat and are protected against torsional dam-
age.
Make sure that the tyre is in good condition
without any signs of undue wear or damage.
- Place the tyre over the wheel and tilt the tower
forward. Position the bottom bead (fi g.20) be-
neath the right hand side of the mount/demount
head. Press the table top control pedal to turn
the table clockwise and mount the bead. Use
the drop centre by pressing the sidewall op-
posite the head to reduce tensional force on
the bead as the wheel rotates (fi g.20).
EN
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