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Tire information, Electrical storm injury prevention, Before starting engine – CAT Caterpillar Wheel Tractor-Scraper 627G User Manual

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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.

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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.