John Bean T2545T Manual Del Operador página 19

5.1.4
5.1.5
5.1.6
5.1.7
5.1.1 Removing the tires
BEFORE PROCEEDING WITH THE TYRE EXTRACTION,
CHECK THAT BOTH BEADS ARE COMPLETELY
BROKEN.
5.1.1.1 Head Positioning
Procedure:
If necessary, adjust the mounting head as described in
chapter 5.7.2.
• Position the mount/demount head in contact with the
rim edge and lock it into place: the tool automatically
moves away from the rim edge vertically. Turn the
adjustment knob until the mount/demount head
clears from the rim fl ange about 1/25" (1 mm): this is
necessary to avoid rim damage (Fig 5.1-4).
Note: once the mount/demount head is positioned
properly, matching wheels may be changed
without having to reset the head.
Note: the plastic insert inside the mount/demount
tool must be periodically replaced. Every
machine is equipped with several plastic
inserts (inside standard equipment box). If
desired, the plastic insert may be replaced
by a steel roller also included in the standard
equipment box. Follow the instructions
included with the replacement parts.
• Insert the bead lifting tool under the bead and over the
support of the mount/demount tool. Lift the bead onto
the mounting fi nger. To facilitate this operation, press
with left hand on the bead in position diametrically
opposite to that of the tool. If desired, the bead lifting
tool can be removed after lifting the bead onto the
fi nger (Fig. 5.1-5).
• Rotate the turntable clockwise and at the same time
push down on the tire sidewall to move the bead into
the drop-center of the rim (Fig.5.1-6).
• Repeat the process for removing the lower bead. With
left hand, lift the bead in position diametrically opposite
the tool to keep it in the drop center (Fig. 5.1-7). Move
the swing arm aside and remove the tire.
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