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A
B
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44
5.2-1
1
5.2-2
5.2-3
3
5
6
4
5.2-4
Operations
5.2 Demounting tires
Figure 5.2-1
•
Remove all wheel-weights from the rim. Remove
the valve stem or core and defl ate the tire.
5.2.1 Bead Breaking
Upper Bead Breaking
First of all the Bead Breaker Disc must be placed in
the correct position.
Proceed as follows:
Figure 5.2-2
•
Use handle 1, Figure A, to move the Upper Bead
Breaker in position on the tyre bead, close to the
contact area with the rim.
The lower disc automatically starts the movement, until
it reaches the corresponding position of the upper disc
(Figure B).
•
Wait for the LED (6, Fig.5.2-4), and the corresponding
acoustic signal, to switch off.
•
Activate the control (5, Fig.5.2-4) to lock both Bead
Breaker arms.
•
Activate rotation and lubricate in the bead breaking
zone.
•
Lower the Disc (Command 3, Fig. 5.2-4) by exerting
moderate pressure to move the bead just slightly
away from its seat on the rim.
Note: Proceed with rotation and lubrication so that
the solution penetrates as far as possible
between tire and rim Figure 5.2-3.
• Gradually lower the Bead Breaker Disc, ensuring
that rotation is always active, until the bead has
been moved completely away from its seat in the
direction of the rim drop center.
WARNING: IF NECESSARY BEAD BREAKING CAN
BE AIDED BY USING THE BEAD BREAKER DISC
PENETRATION ANGLE VARIATION CONTROL
Disc Penetration Angle Control
Figure 5.2-4
The machine features a control 1 for variation of the
upper Bead Breaker Disc penetration angle, to be
activated as required.
Description of operation:
After initial pressure of the Disc on the tire, the operator
may realize that there are disc penetration diffi culties
and from this position will then be able to proceed with
modifi cation of the penetration angle.
Operator's Manual
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