SECTION 12
CUSTOM AND SPECIAL WHEELS
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.
SECTION 13
MOUNTING
This information must be read and followed carefully to
prevent accidents and injuries during mounting.
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.
WARNING!
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.
WARNING!
Attempts to force a bead seat on mis-matched tires
and wheels can cause the tire to violently explode,
causing serious personal injury or death to
operator and/or bystanders.
WARNING!
Never mount a tire and wheel handed to you by
anyone without checking both tire and wheel for
damage and compatibility. Be extra cautious of
persons without knowledge of tire service.
Keep bystanders out of service area.
22
WARNING!
Never mount a damaged tire.
Never mount a tire on a rusty or damaged wheel.
Damaged tires and/or wheels may explode.
Fig. 12.2
Fig. 12.1
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