COATS 6060 AX/EX Tire Changer - Manual (Page 14)

4. Mount the top bead using short rotations of the
wheel. On stiff sidewall tires, add a second drop
center tool to keep the bead in the drop center.
Figure 34- Add Second Drop Center Tool
5. On extremely tight tire and wheel combinations,
it may be necessary to use the hooked end of
the bead lifting tool to flip the tire over the rim
flange (Figure 35).
Figure 35 - Use Hooked End of Bead Lifting Tool
6. After beads are mounted, unclamp wheel, lift it
slightly, and move the clamps to the center of
the table top. With the tire/wheel loose on the
table top, follow the detailed instructions
provided in the Inflation section of this manual
for bead sealing, bead seating, and inflation.
Custom and Special Wheels
If a custom wheel is
damaged in mounting or
dismounting, STOP, and
avoid damaging the other wheels. Continue only
when the cause is identified and corrected.
Alloy Wheels
Some manufacturers offer wheels with little or no
drop center. These are not DOT approved. The tire
or wheel - or both - can be damaged and the tire
could explode under pressure, resulting in serious
injury or death. If you attempt to mount/demount this
type of wheel, use extreme caution (Figure 36).
Figure 36 - No Drop
Center
European Performance Wheels (Asymmetrical Hump)
Some European wheels have very large humps
except near the valve hole. On these wheels, the
beads should be loosened at the valve hole on both
the upper and lower sides first (Figure 37).
Figure 37 - Asymmetrical Hump on European Wheels
Wheels with Low Pressure Warning Sensors
Performance wheels on some vehicles (including
Corvette, BMW, Lamborghini Diablo) have a
pressure sensor strapped to the rim opposite the
valve hole. On these wheels, the beads should be
loosened at the valve hole on both upper and lower
sides first (Figure 38).
Figure 38 - Wheels with Low Pressure Sensor
Tube Type Tires
Mounting
1.
Avoid pinching or forcing the tube.
2. Apply rubber lubricant to the beads of the tire.
3. Mount the bottom bead.
4. Round out the tube with a small amount of air.
5. Apply rubber lubricant to the tube.
6. Insert the tube into the tire.
7. Mount the top bead.
Demounting
1.
After tire beads are loosened, lubricate the
beads and rim liberally.
2. Position demount head and bead lifting tool as
described in steps 7 through 11 on pages 4 and
5. Depress table top pedal and rotate only a
short distance at a time. This allows you to stop
the process should the tube get pinched.
3. After upper bead is demounted, remove tube
and demount lower bead.
Do it Now
Make sure the instruction and
warning decal is clean and clearly
visible to operator.
12 • COATS 6060AX/EX Rim Clamp Tire Changer
No Drop
Center
Slight
Hump
Large
Hump
Valve Hole
Transmitter
Mounting
Strap
Valve Hole
✓
CAUTION