Bead Breaking - Nussbaum TC 110 PRO Manual De Instrucciones

11.1 BEAD BREAKING

WARNING!
Bead breaking must be done with the utmost care and attention.
When the bead breaker pedal is operated the bead breaker arm moves quickly and powerfully.
Anything within its range of action can be in danger of being crushed.
WARNING!
Remember to remove all weights from both sides of the rim before operating the machine.
1) Deflate the tyre completely and remove the valve core.
2) Close the table top gripper slides completely.
WARNING!
Bead breaking with the table top slide grippers open can
crush the operator's hands.
During bead breaking NEVER touch the walls of the tyre with
your hands.
N.B.: The stroke limiter (see Fig. M/2) is required for bead breaking on RUN
FLAT, LOW PROFILE and UHP tyres.
The device limits the "closure" of the bead breaker by different amounts depending
on the position of the pin (1, Fig. M/2):
- setting "0" : no limitations
- settings 6"-7" ; 8 -9" ; 10"-11" : indicate the rim width for which the bead
breaker closure is set.
Check the width of the rim then place the pin in the correct hole: the stroke limiter
will allow the bead to be broken without letting the shovel penetrate too far and
crush the beads (see Fig. M3).
WARNING! Position the blade as to operate the side of the
tyre and not of the rim.
4) Push the blade (12, Fig. H) into the tyre by depressing pedal (3, Fig. H).
Repeat this process at different points around the tyre and on both sides until the
beads are completely loosened.
WARNING: During bead breaking, care must be taken not
to deform the tyre too much as this may damage it.
WARNING: To avoid the risk of damage to the valve and the
pressure sensor (if installed), only break the bead with the
valve and sensor at 90° to the bead breaker pressure point
(at 12 o'clock and 6 o'clock).
Before proceeding with the bead breaking procedure, it is
essential to identify the type of tyre being worked on
(especially when working on RUN FLAT, LOW PROFILE or
UHP tyres).
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