SECTION 12
CUSTOM AND SPECIAL WHEELS
DANGER!
If a custom wheel is damaged in 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.
(See Fig. 12.1)
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.
Some Wheels with Tire Pressure Warning Sensors
Performance wheels on some vehicles have a pressure
sensor strapped to the rim opposite the valve hole or
mounted on the valve stem. On these wheels, the beads
should be loosened at the valve hole on both upper and
lower sides first. (See Fig. 12.2)
DEMOUNTING TUBE TYPE TIRES
1. After both tire beads are loosened, lubricate the beads
and rim liberally.
2. Position the demount head and bead lifting tool as
described earlier paying careful attention not to pinch the
tube. Depress the table top pedal and rotate only a short
distance at a time. This allows you to stop the process
should you suspect the tube is getting pinched.
3. After upper bead is demounted, remove tube and
demount lower bead.
24
Fig. 11.29
Fig. 11.28
Fig. 12.1
Fig. 12.2
FOR TUBE-TYPE TIRES
With tube-type tires, demount the upper bead and
remove the tube before de-mounting the lower
bead.
NOTE:
Table top rotation can be stopped at any time by
removing your foot from the rotation pedal. Normal
table top rotation for demounting is clockwise.
Depress the table top pedal to rotate this direction.
To rotate the table top
counterclockwise, lift the pedal up with your toe.
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