Removing The Tires; Head Positioning - John Bean EHP System III-E Manual Del Operador

20
- EN
5.1.4
2/3" (17 mm)
1/25" (1 mm)
5.1.5
5.1-6

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:
• 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 mm (1/25"): 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.
Angular tool adjustment
The tool is adjusted at the factory with an optimal angle
for most wheels used today. However, the angle can
be optimised for wheels with a diameter that differs
considerably from the standard.
To adjust the tool angle, proceed as follows:
1. Mount the rim for which the adjustment is required.
2. Loosen the lower screw (1, Fig. 5.1-5).
3. Adjust the tool with the screws shown (2a and 2b, Fig.
5.1-5). Unscrew the screw (2a or 2b, Fig. 5.1-5) to rotate
the tool, respectively clockwise or counterclockwise.
4. Screw in the opposite screw to block the tool in the
desired angular position.
5. Tighten the lower screw (1, Fig. 5.1-5) with a torque of
35 Nm.
• 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. 5.1-6).