Ensuring Good Visibility; Operating On Snow; Avoid Damage To The Dump Body; Driving Near High-Voltage Cables - Komatsu 730E Operation & Maintenance Manual

OM2036 08/11

Ensuring Good Visibility

• When working in dark places, install work lamps
and headlamps.
• Safely stop the truck if visibility is poor, such as in
mist, snow, or rain. Wait for the weather to
improve to allow safe travel.

Operating On Snow

• When working on snowy or icy roads, there is
danger that the machine may slip on even the
slightest slope. Travel slowly and avoid sudden
starting, turning, or stopping in these conditions.
• Use caution when clearing snow. The road
shoulder and other objects may be buried in the
snow and cannot be seen.

Avoid Damage To The Dump Body

• When working in tunnels, on bridges, under
electric cables, or when entering an enclosed
area where there are height limits, use extreme
caution. The dump body must be completely
lowered before driving.
Driving with a raised dump body, or raising the
dump body in an enclosed area, may result in
serious damage and bodily injury or death. Drive
with the dump body resting on the frame.

Driving Near High-Voltage Cables

• Driving near high-voltage cables can cause
electric shock. Maintain the safe distances
between the machine and the electric cable, as
listed below.
Voltage Minimum Safe Distance
6.6 kV 3 m
33.0 kV 4 m
66.0 kV 5 m
154.0 kV 8 m
275.0 kV 10 m
The following actions are effective in preventing acci-
dents while working near high voltages:
• Wear shoes with rubber or leather soles.
• Use a signalman to give warning if the machine
approaches an electric cable.
• If the work equipment must touch an electric
cable, the operator must remain in the cab.
• When working near high-voltage cables, DO
NOT allow anyone to approach the machine.
• Check
department about the voltage of the cables
before operating the truck.

When Loading The Truck

• Ensure the surrounding area is safe. If so, stop
the machine in the correct loading position and
evenly load the body.
• DO NOT leave the operator's seat during loading.

When Dumping

• Before starting, check that there is no person or
objects behind the machine.
• Stop the machine in the desired location. Check
again for persons or objects behind the machine.
Give the determined signal, then slowly operate
the dump body. If necessary, use blocks for the
wheels or position a flagman.
• When dumping on slopes, machine stability is
poor and there is danger of tip over. Avoid
dumping on slopes whenever possible.
• DO NOT travel with the dump body raised.

Working On Loose Ground

• Avoid
overhangs, and deep ditches. If these areas
collapse, the machine could fall or tip over and
result in serious injury or death. Remember that
10 ft
ground surfaces in these areas may be
14 ft
weakened after heavy rain or blasting.
17 ft
• Freshly laid soil and the soil near ditches is loose.
27 ft
It can collapse under the weight or vibration of
the machine. Avoid these areas whenever
33 ft
possible.
Safety - Section 20
with the electrical
operating the machine
Page 20-7
maintenance
near cliffs,