Figure 3-33.—Repair of tire punctures
Punctured tires can be repaired without being
removed from the rim. In this case, the insertion of the
plug is performed from the outside in, and steps 6 and 7
of figure 3-33 are not required.
NOTE: For radial-ply tires, repairs can only be
made in the central tread area between the major
grooves.
The procedures for removing and remounting a
tubeless tire are similar to that for tube tires. If the seal
is broken or defective, use a tube inside the tire;
otherwise, the tire will lose air, and you will have to
inflate it frequently. Some tubeless passenger car tires
must be removed from the backside of the rim to prevent
stretching the bead wires too far and causing them to
break. If in doubt about any detail of the procedure for
changing tubeless tires, follow the tire manufacturer’s
instruction or consult the maintenance supervisor.
Earthmover Tire Repair
When major damage or a blowout occurs or normal
wear limits have been reached, the tire must be removed.
Size alone makes the removal and replacement of
earthmover tires difficult. Additionally, the nature of the
terrain over which they operate often cause conditions
to be far from ideal. Certain tools are necessary to
change these large tires. The hydraulic bead breaker is
specifically designed to break the giant beads for easier
removal of the tire. BEFORE ATTEMPTING TO
REMOVE THE TIRE, MAKE SURE THE WHEEL
HAS BEEN JACKED UP AND THE EQUIPMENT
PROPERLY BLOCKED FOR MAXIMUM SAFETY.
After the equipment has been safely cribbed, deflate the
tire completely by removing the valve core.
The clamping device is used to aid in unseating
(breaking) the tire beads. Attached to the rim flange, it
3-17
