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OPERATION
OPERATION
HANDLING THE TIRES
PRECAUTIONS WHEN HANDLING TIRES
(1)
(2)
(3)
(4)
(5)
(6)
(7)
Side wall
Shoulder
Tread
Breaker or belt (cord layer)
Bead
Inner liner
Carcass
CAUTION
If a tire has reached any of the following service limits, there is danger that
the tire may burst or cause an accident, so to ensure safety, replace it with
a new tire.
Service limits for wear
When the remaining depth of the grooves on construction equipment
tires (at a point approx. 1/4 of the tread width) is 15% of the groove depth
on a new tire.
When the tire shows marked uneven wear, stepped wear or other
abnormal wear, or when the cord layer is exposed.
Service limits for damage
When there is external damage extending to the cord or when the cord
is broken
When the cord is cut or there is dragging
When the tire is peeling (there is separation)
When the bead is damaged
For tubeless tires, when there is air leakage or improper repair
Do not install a tire protector (mesh chain) to the rear tires.
Please contact your Komatsu distributor when replacing the tires. It is dangerous to jack up the machine without
taking due care.
TIRE PRESSURE
Measure the tire pressure before starting operations, when the tires are cool.
If the tire inflation pressure is too low, there will be overload; if it is too high, it will cause tire cuts and shock burst.
To prevent these problems, adjust the tire inflation pressure according to the table on the next page.
Deflection ratio = H - h / H x 100
As a guideline that can be checked visibly, the deflection ratio of the front tire (deflection/free height) is as follows.
When carrying normal load (lift arm horizontal): Approx. 15 to 25 %
When digging (rear wheels off ground): Approx. 25 to 35 %
3 - 156
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