Listen to the sound of the hydraulic breaker while
you are using it. If the sound becomes weaker and
the impact less efficient, the tool is misaligned with
the material and/or there is not enough feed force
on the tool. Realign the tool and press the tool firmly
against the material.
Stop operation if hydraulic hoses shake abnormally.
Immediately stop the operation. Otherwise this may
result in serious failure in the hydraulic system
including pumps. Check the gas pressure of the
back head and accumulator and charge the
pressure to the recommended value. See the
breaker’s manual for detailed information.
Do not operate the bucket, arm and boom cylinders
closer to their end positions than 10 cm (4 in) to
prevent cylinder’s damage.
Operating techniques
Hammer
253
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