Traveling In The Truck; Precautions When Traveling In Reverse; Traveling On Slopes - Komatsu 730E Operation & Maintenance Manual

Safety - Section 20
Page 20-6
• Check for flat tires periodically during a shift. If
the truck has been operating on a flat, DO NOT
park indoors until the tire cools. If the tire must be
changed, DO NOT stand in front of the rim and
locking ring when inflating a tire mounted on the
machine. Observers must not be permitted in the
area and must be kept away from the side of
such tires.
The tire and rim assembly may explode if sub-
jected to excessive heat. Personnel must move to
a remote or protected location if there is a fire near
the tire and wheel area, or if the smell of burning
rubber or excessively hot brakes is evident.
If the truck must be approached, such as to fight
a fire, those personnel must do so only while fac-
ing the tread area of the tire (front or back),
unless protected by the use of large heavy equip-
ment as a shield. Stay at least 15 m (50 ft) from
the tread of the tire.
In the event of fire in the tire and wheel area
(including brake fires), stay away from the truck
for at least eight hours, or until the tire and wheel
are cool.
• Keep serviceable, fire fighting equipment nearby.
Report used extinguishers for replacement or
refilling.
• Apply the parking brake when the truck is parked
and unattended. DO NOT leave the truck
unattended while the engine is on.
• Park the truck a safe distance away from other
vehicles, as determined by the supervisor.
• Stay alert at all times! In the event of an
emergency, be prepared to react quickly and
avoid accidents. If an emergency arises, know
where to get prompt assistance.

Traveling In The Truck

• When traveling on rough ground, travel at low
speeds. When changing direction, avoid turning
suddenly.
• Lower the dump body, and set the dump lever to
the FLOAT position before traveling.
• If the engine stops while the truck is in motion,
the steering and brakes will continue to operate,
but only for a fixed amount of oil consumption.
Steer immediately to a safe spot, and stop the
truck. When the truck is completely stopped,
apply the parking brake.

Precautions When Traveling In Reverse

Before operating the
machine or work equip-
ment, do as follows:
• Ensure the back-up alarm works properly.
• Sound the horn to warn people in the area.
• Check for personnel near the machine. Do a
thorough check behind the machine.
• When necessary, designate a person to watch
the area for the truck operator. This is particularly
necessary when traveling in reverse.
• When operating in hazardous areas and areas
with poor visibility, designate a person to direct
work site traffic.
• DO NOT allow anyone to enter the line of travel
of the machine. This rule must be strictly obeyed,
even with machines equipped with a back-up
alarm or rearview mirror.

Traveling On Slopes

• Traveling on slopes could result in the machine
tipping over or slipping.
• DO NOT change direction on the slopes. To
ensure safety, drive to level ground before
turning.
• DO NOT travel up and down on grass, fallen
leaves, or wet steel plates. These materials may
cause the machine to slip on even the slightest
slope. Avoid traveling sideways, and keep travel
speed low.
• When traveling downhill, use the retarder to
reduce speed. DO NOT turn the steering wheel
suddenly. DO NOT use the foot brake, except in
an emergency.
• If the engine stops on a slope, apply the service
brakes fully and stop the machine. Apply the
parking brake after the machine has stopped.
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