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OPERATION
OPERATION
HANDLING TIRES
PRECAUTIONS WHEN HANDLING TIRES
WARNING
If tires in the following condition are used, there is danger that the tire may
burst when the machine is traveling, causing the machine to tip over or
parts to fly off. This may result in damage or serious personal injury.
Always replace damaged tires with new tires.
Tires where the bead wire has been cut, broken, or greatly deformed
Excessively worn tires where more than 1/4 of the circumference of the
carcass ply (excluding the breaker) is exposed
Tires where damage to the carcass exceeds 1/3 of the tire width
Tires where ply separation has occurred
Tires where radial cracks extend to the carcass
Tires where there is abnormal deterioration, deformation, and damage,
and the tire cannot withstand use.
Please contact your Komatsu distributor when replacing the tires.
Always be careful when jacking up the machine. If the machine is
not jacked up properly, the machine may lose its balance, come
down, and cause a serious accident.
T.Km.P.H (Ton-Km-Per-Hour Rating)
Tires for construction equipment are used under severe conditions that bear no comparison with the tires used on
cars, buses, or ordinary trucks, so they are specially designed to withstand these conditions.
Compared with ordinary tires, far greater heat is produced in the rubber internal parts of off-road tires when the
machine is traveling. If they are used continuously under conditions which exceed the permitted load and travel
speed of the tire, the internal temperature will exceed the limit, and the rubber may become soft and heat separation
occur.
The T.Km.P.H rating is provided as a standard to allow the machine to travel without causing the above problems.
If tires are used for work that exceeds the tires' T.Km.P.H rating (the T.Km.P.H rating for the work is greater than
the T.Km.P.H rating for the tires), tire trouble will become more frequent because of the generation of heat. In such
cases, do as follows.
Make the operating conditions easier so that the operation T.Km.P.H. of the work is lowered.
Increase the size of the tires to a tire with a high T.Km.P.H.
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