Operation procedures (Breaking)
2 – 12
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n Security
• Before starting operation, check the topographical and geological conditions of the work site,
and pay sufficient attention to cracks in the ground and collapse of buildings.
• Station guards, arrange fences, and take other safety measures to protect pedestrians and
general vehicles.
Precautions for traveling/stopping
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n Precautions for traveling
• To secure the forward field of vision and ensure traveling safety, raise the hydraulic breaker 30-
40 cm or more from the ground and select a flat ground for traveling.
• When traveling in water, keep the allowable traveling depth of the hydraulic excavator, and
exercise sufficient care so that the hydraulic breaker will not be immersed in water.
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n Precautions when traveling up-/down-slopes
• Do not travel exceeding the hill climbing ability and safety of the vehicle.
• When traveling an up- or down-slope, lower the engine speed in advance, and keep the angle
between the boom and arm at 90-110°. Keep the hydraulic breaker 30-40 cm above the
ground, and travel the machine facing the slop at all times.
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n Precautions for stopping
• Select a firm ground to part the vehicle. Set the breaker perpendicularly and put the rod end on
the ground.
• When leaving the driver's seat, set the "Safety lock" to prevent the boom and arm from moving,
and then stop the engine.
Breaking operation
CAUTION
Park the base machine on a stable, firm ground as much as possible.
Excessive thrust will cause loss of balance of the base machine when the concrete is
broken.
NOTICE
Select a good place so that the rod will not slip during hammering.
The breaker operation procedure for general concrete breaking operation is shown below.
1. Move the base machine to the front of the concrete to be broken.
2. Operate the boom, arm, and bucket cylinder of the base machine, set the breaker perpendicularly to
the concrete surface to break, and then push and thrust the breaker against the concrete.
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