CAT Caterpillar Wheel Tractor-Scraper 627G - Manual (Page 22)

SEBU7858-03 25
Safety Section
Tire Information
• walkways
• front side door of engine hood
Do not weld a bracket on the Rollover Protective
Structure (ROPS) in order to install the fire
extinguisher. Also, do not drill holes in the ROPS in
order to mount the fire extinguisher on the ROPS.
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Tire Information
SMCS Code: 7000
Explosions of air inflated tires have resulted from
heat-induced gas combustion inside the tires.
Explosions can be caused by heat that is generated
by welding, by heating rim components, by external
fire, or by excessive use of brakes.
A tire explosion is much more violent than a
blowout. The explosion can propel the tire, the rim
components, and the axle components as far as
500 m (1500 ft) or more from the machine. Both the
force of the explosion and the flying debris can cause
property damage, personal injury, or death.
g00337832
Illustration 27
(A) At least 15 m (50 ft)
(B) At least 500 m (1500 ft)
Do not approach a warm tire. Maintain a minimum
distance, as shown. Stay outside the shaded area in
Illustration 27.
Do not use water or calcium as a ballast for the tires.
Dry nitrogen gas is recommended for inflation of tires.
If the tires were originally inflated with air, nitrogen
is still preferred for adjusting the pressure. Nitrogen
mixes properly with air.
Nitrogen inflated tires reduce the potential of
a tire explosion because nitrogen does not aid
combustion. Nitrogen helps to prevent oxidation of
the rubber, deterioration of rubber, and corrosion of
rim components.
To avoid overinflation, proper nitrogen inflation
equipment and training in the usage of the equipment
are necessary. A tire blowout or a rim failure can
result from improper equipment or from misused
equipment.
When you inflate a tire, stand behind the tread and
use a self-attaching chuck.
Servicing tires and rims can be dangerous. Only
trained personnel that use proper tools and proper
procedures should perform this maintenance. If
correct procedures are not used for servicing tires
and rims, the assemblies could burst with explosive
force. This explosive force can cause serious
personal injury or death. Carefully obey the specific
instructions from your tire dealer.
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Electrical Storm Injury
Prevention
SMCS Code: 7000
When lightning is striking in the vicinity of the
machine, the operator should never attempt the
following procedures:
• Mount the machine.
• Dismount the machine.
If you are in the operator's station during an electrical
storm, stay in the operator's station. If you are on the
ground during an electrical storm, stay away from
the vicinity of the machine.
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Before Starting Engine
SMCS Code: 1000; 7000
Start the engine only from the operator's
compartment. Never short across the starter
terminals or across the batteries. Shorting could
bypass the engine neutral start system. Shorting
could also damage the electrical system.