COATS CDH-9551 Electric-Hydraulic Tire Changer - Manual (Page 13)

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Remember that the stronger the tire’s adherence to the rim, the slower must be the disk’s penetration.
7) Move 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).
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.
8) Push the double headed tool lever (9, fig.C) and turn the head180° 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 loosened.
During the bead loosening operation, the finger tool (18, fig.G) can be lowered so that it is out of the way.
9) Take the mobile control unit to work position D.
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DEMOUNTING
Tubeless tires can be demounted in two ways:
1) If the tire 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). Always keep the tire rotating while pushing with the bead disck
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 tire.
- Insert lever (17, Fig. I) between rim and bead at the right of the tool.
-Press down on the lever and lower the tire assembly to bring the edge of the rim about 2 inches (5 cm) from the hooked tool.
-Turn the tire assembly counterclockwise pressing down on lever until the bead is completely off.
-Move the tool carrier arm to its non-working position and then move it to the inside face of the tire assembly.
- Rotate the tire assembly and at the same time move the hook tool forward inserting it between rim and bead until it is anchored to
the bead (See Fig. I).
-Move the rim 1.5-2 inch (4-5 cm) from the tool taking care that it does not unhook from the bead.
-Move the hook tool towards the outside until the red reference dot is by the outside edge of the rim.
Take the mobile control unit to work position C.
Take the mobile control unit to position B.
Take the mobile control unit to work position D.