COATS CDH-9043 Electric-Hydraulic Tire Changer - Manual (Page 20)

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DANGER! POTENTIALLY HAZARDOUS OPERATION!
Do it manually only if you are certain you can keep the tire assembly balanced. For large and heavy tires an adequate
lifting device must be used
U V
30) Move the platform to release the tire from the spindle.
31) Remove the tire.
13.4
WHEELS WITH SPLIT RING
BEAD BREAKING AND DEMOUNTING
TIRE ASSEMBLY WITH 3-PIECE RINGS
1) Clamp the tire on the spindle as described previously and check to make sure it has been deflated.
2) Take the mobile control unit to work position B.
3) Lower the tool carrier arm (14, Fig. D) to its work position and double check it is locked in position by its hook.
4) Position the bead loosener disk as levelled with the rim (See Fig. W).
5) 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 free (NB: 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.
6) Repeat this procedure but this time bring the disk against the split-ring (See Fig. Z) until the lock ring is freed. Remove this with the special
lever (20, Fig. Z) or with the help of the disk.
7) Remove the split-ring.
8) Move the tool carrier arm (14, Fig. D) 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.
9) Press lever (15, Fig. D) and turn the tool head 180° which will automatically lock in this position. Lower the arm to its working position.
10) Turn the spindle and at the same time bring the bead loosener disk up against the tire following the contour of the split-ring until the
Second bead has been loosened (NB: Lubricate during this process).
Continue to move the disk forward until about half the tire has demounted from the rim (See Fig. K).
11) Move the tool carrier arm to its non-working position.
12) Move the ramp (4, Fig. A) directly under the tire.
13) Lower the spindle until the tire is resting on the ramp.