COATS CDH-4730 Electric-Hydraulic Tire Changer - Manual (Page 21)

1
Fig.38 Fig.39
1) Clamp the tire on the spindle as described previously and make sure it has been deflated. (see par. “rim clamping”)
2) Lower the tool carrier arm to its working position until its hook is engaged into position on the carriage.
3) Position the bead loosening as levelled with the rim (Fig. 40).
4) Turn the spindle and at the same time move the disk forward a bit at a time following the contour of the rim until the first bead is com-
pletely off (lubricate while doing this).
CAUTION! If the tire has an inner tube, work very carefully and be prepared to stop the disk immediately once the bead has been broken
so as not to damage the valve and the inner tube.
5) Repeat this procedure but this time bring the disk against the split-ring (Fig. 41) until the lock ring is relased. Remove this with the special
lever (22, fig. 41) or with the help of the disk.
Remove the split-ring.
6) Move the tool carrier arm (17) back from the edge of the rim. Release the hook and tip the arm to its non-working position.
Move the tool carrier arm to the inside face of the tire.
7) Lower the arm to its working position, after having turned the tool head 180° (by releasing the looking pin, 15, fig. 32)
8) Turn the spindle and at the same time bring the bead loosening disk up against the tire following the contour of the split-ring until the
second bead has been loosened (Lubricate during this process).
Continue to move the disk forward until about half the tire has been demounted from the rim (Fig. 42) .
9) Move the tool carrier arm to its non-working position.
10) Move the ramp (10, fig. 36) directly under the tire.
11) Lower the spindle until the tire is resting on the ramp.
12) Move the ramp towards the outside until the tire is completely off the rim. Watch out for the valve!
7.5 TIRE ASSEMBLy WITH -PIECE SPLIT RING
7.5.1_Bead loosening and demounting with DOUBLE TOOL. (optional)