COATS 7665 AX/EX Tire Changer - Manual (Page 8)

MOUNTING
This information must be read and followed carefully
to prevent accidents and injuries during mounting.
Check tire and wheel
carefully before mounting.
Make sure the tire bead
diameter and wheel diameter match exactly.
Consult the
Rubber Manufacturer's Association
for approved rim widths for tire sizes.
Attempts to force a bead
seat on mis-matched tires
and wheels can cause the
tire to violently explode, causing serious person-
al injury or death to operator and/or bystanders.
Never mount a tire and
wheel handed to you by
anyone without checking
both tire and wheel for damage and compatibili-
ty. Be extra cautious of persons without knowl-
edge of tire service. Keep by-standers out of ser-
vice area.
Never mount a damaged
tire. Never mount a tire on
a rusty or damaged wheel.
Damaged tires and/or wheels may explode.
If you damage the tire bead
during mounting, STOP!,
remove the tire and mark it
as damaged. Do not mount a damaged tire.
1. Inspect the wheel closely for damage. Clean the
wheel and remove any light corrosion or rubber
residue (Figure 14). Do not attempt to service
heavily corroded wheels.
Figure 14 - Inspect and Clean the Wheel
2. Inspect tire for damage, paying close attention
to the beads. Verify size match between tire and
wheel (Figure 14).
3. Lubricate tire beads liberally with tire manufac-
turer’s approved lubricant (Figure 15).
Figure 15 - Lubricate Beads
4. Place tire over wheel and move swing arm into
position making sure the value stem is at the 6
o’clock position. Position tire so that the lower bead
is above the rear extension of the mount/demount
head and below the front knob (Figure 16).
Figure 16 - Position Tire Against Mount/Demount Head
5. Depress table top pedal and rotate the wheel to
mount the lower bead. Use the drop center of
the wheel to reduce the tensional force on the
bead by pressing down on the tire directly
across from the mount head. Rotate table top
until lower bead is fully mounted.
Figure 17 - Mounting Top Bead
6. For top bead, rotate the table top until the valve
stem is at the 6 o’clock position . Lift the upper
bead up and over the rear of the mount head.
With your left hand press down on the tire
between the mount head and the valve stem to
hold the tire in the drop center. Depress table
top pedal and rotate tire until the bead is mount-
ed. Continue to press down on tire during the
remaining mounting process (Figure 17).
Do not force the tire onto
the rim. Bead damage
could result making the
tire unsafe and/or creating the risk of injury.
N. If table top rotation stalls, reverse the table top
momentarily until the tire bead is again loose on the
wheel. Reposition the tire on the mount head, make
sure the bead is correctly positioned in the drop cen-
ter of the wheel, then attempt mounting again.
P. For low profile or stiff sidewall tires, use the
helper tool to initially hold the upper bead down in
the drop center, as shown in Figure 33, page 11.
R. For tube type tires, mount the lower bead first,
move swing arm out, install the tube, and then
mount the upper bead.
6 • 7660/7665AX/EX Rim Clamp Tire Changer
WARNING
CAUTION
WARNING
CAUTION
WARNING
DANGER