COATS 9024E Tire Changer - Manual (Page 12)

8 • Important: Always read and follow the operating instructions.
3. Inspect the valve stem and replace if necessary.
Next lubricate the tire beads liberally with tire manu-
facturer’s approved rubber lubricant (figure 16).
Figure 16 - Lubricate Tire Beads Liberally
4. Place tire over wheel and move tower arm into
position. Position tire so that the lower bead is above
the rear extension of the duckhead
® and below the
front knob (figure 17).
Figure 17 - Position Tire Against Duckhead
5. Depress tabletop pedal and rotate the wheel to
mount the lower bead. Use the drop center of the
wheel by forcing down on the tire just ahead of the
mounting tool and follow as the tire rotates (figure 18).
Rotate the tabletop until the lower bead is mounted.
Figure 18 - Mounting Lower Bead
6. For top bead installation, rotate the tabletop until
the valve stem on the wheel is 90 degrees ahead of
the duckhead (at the 3 o’clock position). Lift the upper
bead of the tire up and over the rear of the duckhead.
With your hand or using the power roller, press down
on the tire sidewall between the duckhead and the
valve stem to hold the tire in the rim drop center. The
bead should also be under the right side of the knob on
the duckhead (figure 19). Depress the tabletop pedal
and rotate the tire until the bead is mounted. Be care-
ful to assure the bead stays in the rim drop center in
the area ahead of the duckhead.
Figure 19 - Mounting Top Bead
P. If tabletop rotation stalls, reverse the tabletop
momentarily until the tire bead is again loose on the
wheel. Reposition the tire on the duckhead, make sure
the bead is correctly positioned in the drop center of
the wheel; then attempt mounting again.
R. For tube type tires, mount the lower bead first,
move the tower back, install the tube, and then mount
the upper bead.
90º