Nussbaum TC 110 PRO Manual De Instrucciones página 43

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UPPER BEAD DEMOUNTING
1- Move the tyre changer arm to the working position.
2- Position the valve in correspondence with the head.
3- Manually move the horizontal arm (9, Fig. H) and the hexagonal
rod (8, Fig. H) to position the head (13, Fig. H) against the rim edge.
If this proves difficult, facilitate it by using the PT40:
- Bring the PT40 arm to the working position and near to the
mounting head.
- Position the bead depressor pad, adjusting the height, in contact
with the tyre.
- Activate the arm descent control, to create a lowering of the tyre's
sidewall (see Fig. P3), sufficient enough for the correct positioning
of the head.
- Lock the head.
CAUTION.
Using the bead depressor pad, never apply
excessive pressure or pressure that would cause
a deformation of the tread surface.
Use the space created for the insertion of the edge guard on the rim
and of the lever (see Fig. P4).
N.B.: The lever insertion depth the must be in proportion to the
height of the tyre's sidewall.
5- Raise the PT40 arm.
6. Manually insert the rollers on the side opposite the mounting head
(see Fig. P5), simply by inserting them between the rim and the tyre
(see Fig. P6).
N.B.: If this proves difficult it is possible to use the PT40 to create
the space needed for the insertion of the rollers.
Note: The roller bead depressor has a variable length, therefore the
position and number of the rollers to be used can be adapted based
on the rim diameter.
7. When using the lever, to position the bead above the mounting
head, the rollers will turn, as well as keeping the bead in position in
the rim well, reducing the effort of the operator, and the risk of damage
to the tyre due to excessive tension.
8. Start the rotation turntable until the demounting of the first bead
is complete, manually holding the appropriate handle-shaped head of
the roller bead depressor to facilitate the extraction.
CAUTION!
The rim and tyre must move in solidarity with
each other, so as to prevent the valve with the
sensor (if present) from getting damaged.
The risk of damage is very high when the
sensor passes through the tension points.
43
P3
P4
P5
P6
TC 110 PRO