COATS 9500R Electro-Hydraulic Tire Changer - Manual (Page 12)

5.2 Demounting Tubeless Truck Tires (Up to
13” Wide)
The tubeless truck tires are mounted on drop-center
rims with a conical base. It is possible to demount
these tires simply by pressure, with a proper lubrica-
tion (fig.17).
Fig.17
1. Remove all wheel-weights from the rim. Remove
the valve stem or core and deflate the tire.
2. Position the bead loosener disc or tubeless roller
(option) as shown in fig.18, fig.19.
Fig.18
Fig.19
3. Lift or lower the chuck so that the bead loosener
disc or tubeless roller remains close to the rim edge.
Turn the chuck counterclockwise and at the same time
shift the tool holder carriage step-by-step toward the
inside to demount the tire.
Continue to turn the chuck and lubricate the bead and
the rim liberally with an approved lubricant.
Use only approved lubricants for tires and
wheels.
4. Raise the tool holder arm to the rest position.
5. Move the tool holder arm all the way in. Lower the arm
and secure. Bring the tool in contact with the inner bead.
6. Loosen the inner bead as described in point #3 above.
CAUTION
8 • COATS 9500R Tire Changer