COATS CDH-9043 Electric-Hydraulic Tire Changer - Manual (Page 13)

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5) Rotate the wheel and at the same time, advance the bead-breaker plate with small forward movements following the profile of the
rim, with the plate.
6) Continue until the first bead is fully detached.
To facilitate this operation, lubricate the bead and the edge of the rim with tyre lubricant whilst the wheel is rotated.
Remember that the stronger the tyre’s adherence to the rim, the slower must be the disk’s penetration.
7) Bring the tool carrier arm (14, Fig. F) back from the edge of the rim. Release the hook, raise the arm to its non-working position, shift it
and rehook it in its second work position (Fig. G).
8) Push the double headed tool lever (15, fig. G) and turn the head 180° until it locks automatically. Then slide the tool-holder arm along
the sliding table and lock it in position.
Repeat the operation previously described until the second bead is completely broken.
N.B.: During the bead breaking, the claw (18, fig.G) can be lowered so that it is out of the way.
9) Take the mobile control unit to work position D.
4) Operating from the mobile control centre, manoeuvre the wheel until the outside of the rim skims the bead-breaker disk (fig. F).
DANGER!
The bead breaker disk must NOT be pressed against the rim but against the tire bead.
CAUTION!
To avoid all risk, lubricate the beads turning the tire assembly CLOCKWISE if you are working on the outside
face and COUNTERCLOCKWISE if working on the inside face.
DANGER!
Do not hold your hands on the tool when you bring it back to its work position.
Your hand(s) could be trapped between the tool and the tire assembly.
G F
DEMOUNTING
Tubeless tyres can be demounted in two ways:
1) If the tyre is not difficult to demount, once the beads have been loosened, use the bead disk to push against the inside plane of the
tire until both beads come off the rim (See Fig. H).
2) With Supersingle or very hard tires the procedure described above cannot be used. The hook tool will have to be used as follows:
- Transfer the tool carrier arm to the outside plane of the tyre.