Komatsu 960E-1 -, Руководство по ремонту, Страница: 39 / 51

00 Index and foreword CEN00002-05
21
Tires
Handling tires
If tires are not used under the specified conditions,
they may overheat and burst, or be cut and burst by
sharp stones on rough road surfaces. This may lead
to serious injury or damage.
To maintain tire safety, always use the specified tires.
Inflate the tires to the specified pressure. An
abnormal level of heat is generated when the inflation
pressure is too low.
The tire inflation pressure and permissible speeds are
general values. The actual values may differ
depending on the type of tire and the condition under
which they are used. For details, please consult the
tire manufacturer.
When tires become hot, a flammable gas is produced
and may ignite. It is particularly dangerous if the tires
become overheated while the tires are pressurized. If
the gas generated inside the tire ignites, the internal
pressure will suddenly rise and the tire will explode,
resulting in danger to personnel in the area.
Explosions differ from punctures or tire bursts
because the destructive force is extremely large.
Therefore, the following operations are strictly
prohibited when the tire is pressurized:
• Welding the rim
• Welding near the wheel or tire
• Smoking or creating open flames
If the proper procedure for performing maintenance or
replacement of the wheel or tire is not used, the
wheel or tire may burst and cause serious injury or
damage. When performing such maintenance,
consult your authorized regional Komatsu distributor
or the tire manufacturer.
Refer to the Society of Automotive Engineers (SAE),
SAE J1337, Off-Road Rim Maintenance Procedures
and Service Precautions, Section 4.2 for additional
information on demounting the tires and rim assem-
blies. Also, refer to Section 4.4 of SAE J1337 for
assembly and inflation recommendations.
The U.S. Department of Labor Mine Safety and Health
Administration (MSHA) addresses tire repairs in its Title
30 Code of Federal Regulations, 30 CFR 57.14104.
DO NOT stand in front of a rim and locking ring
when inflating a tire mounted on the machine.
Observers must not be permitted in the area.
DO NOT weld or heat the rim assembly with the tire
mounted on the rim. Resulting gases inside the tire
may ignite, causing explosion of the tire and rim.
Storing tires after removal
• As a basic rule, store the tires in a warehouse in
which unauthorized persons cannot enter. If the
tires are stored outside, always erect a fence
around the tires and put up “No Entry” signs and
other warning signs that even young children can
understand.
• Stand the tire on level ground and block it
securely so that it cannot roll or fall over.
• If the tire falls over, flee the area quickly. The tires
for dump trucks are extremely heavy. Never
attempt to hold or support the tire. Attempting to
hold or support a tire may lead to serious injury.
Mounted tires stored as spares must be inflated to
the minimum inflation pressure necessary to keep the
tire beads properly seated. Maximum inflation
pressure of the stored tire must, in no instance,
exceed 15% of the tire’s cold inflation pressure.