COATS 7665 AX/EX Tire Changer - Manual (Page 7)

H. The vertical tool clearance may change with
machine use and should be inspected often. Failure
to maintain the proper clearance may result in dam-
age to the wheel rim and/or tire.
Figure 10 - Insert Bead Lifting Tool
11. Insert the smooth curved end of the bead lifting
tool over the forward end of the demount head
and below the top bead of the tire. Use your free
hand to press down on the tire opposite the head
to help with tool insertion (Figure 10).
Figure 11 - Lift Bead Over Demount Head
12. Push the bead lifting tool down towards the
wheel to lift the tire bead up and over the knob
portion of the demount head. Hold the tool and
bead in this position (Figure 11).
13. Depress the table top pedal to rotate the wheel
clockwise. The demount head will guide the
upper bead up and over the edge of the wheel.
J. Push down on the tire across from demount head
during table top rotation to utilize the drop center
area of the wheel. This reduces the tensional force
on the top or first bead during demount (Figure 10).
Figure 12 - Demounting Lower Bead
14. Lift and hold the tire at an angle so that the lower
bead is resting in the drop center directly across
from the demount head, and is loose below the
demount head (Figure 12). Insert the smooth
curved end of the bead lifting tool down over the
forward end of the mount/demount tool and
below the lower bead. Lift the bead up and over
the knob on the demount head (Figure 13).
Figure 13 - Guide Lower Bead Over Tool Head
15. Depress the table top pedal to rotate the wheel.
The demount head will guide the bead up and
over the edge of the wheel. Continue rotation
until lower bead is demounted.
K. With tube-type tires, demount the upper bead and
remove the tube before demounting the lower bead.
L. Table top rotation can be stopped at any time by
removing your foot from the rotation pedal.
M. Normal table top rotation for demounting is clock-
wise. Depress the table top pedal to rotate this direc-
tion. To rotate the table top counterclockwise, lift the
pedal up with your toe.
At times during the mount-
ing and demounting proce-
dure, the bead lifting tool
may encounter resistance or come under load.
Keep one hand firmly on the tool to avoid possible
tool disconnect. Use the reversing feature to back
out of jam ups.
After successfully completing the demount
process, proceed to Mounting (page 6).
CAUTION
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77050/7055/7060/7065 X/EX Rim Clamp Tire Changer • 5