TIRE MAINTENANCE MANUAL - Goodyear Off-The-Road (OTR)

Both tube-type and tubeless tires can be repaired.
Regular inspection can detect repairable
injuries before they become
serious. Immediate attention may prevent
extensive or costly damage.
Tread and sidewall cuts are a major source
of off-the-road tire trouble. Tires should be
checked at the start of each shift and during
regular inflation checks. Cuts which
extend to or into the belts or cord body
must be repaired. The tire must be taken
off for repair.
Shallow cuts in the tread can be treated
without dismounting tires. Small rocks and
dirt will get into these shallow cuts. If neglected,
the rocks will gradually be pounded
or drilled through the cord body.
Fig. 23 Deep tread rock cut – If left unattended
will cause cut separation or cut through.
Fig. 25. Skiving reveals close-up of rock cut
damage into working belt.
Repairs
21
Clean out cuts with an awl to remove any
lodged in or embedded material. Use a
sharp, small blade knife to cut a coneshaped
cavity. The cavity should extend to
the bottom of the injury. Sides of the cavity
should slant enough to prevent stones
from wedging. Tires with cuts treated in
this manner may continue in service and
cut growth should be reduced.
All small cuts should be repaired when tires
are removed for major cut repairs. Tires
with very high hours (greater than 10,000)
are not good repair candidates.
Tire repair may be possible, but may not be
economical in older tires. The cost of the
repair must be justified by the remaining
service life.
Fig 24. Deep tread rock cut – If left unattended
will cause tread rock cut separation.