Precautions For Breaker Operation - Hitachi Zaxis 33U-5A Operator's Manual

Precautions for Breaker Operation

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WARNING: Machine stability is reduced as the
breaker is much heavier than the bucket. When using
a breaker, the machine is more apt to tip over. Also,
flying objects may hit the cab or other part of the
machine. Observe the following precautions and take
any other precautions necessary to prevent accidents
and machine damage from occurring.
Avoid hitting objects with breaker.
The breaker is heavier than the bucket, causing the breaker
to lower faster.
Take care not to hit any objects with breaker. Doing so will
result in damage to the breaker, the front attachment, and/
or the upperstructure.
Always move (lower) the breaker slowly to position the tip
of the chisel on the object to be broken before starting
breaker operation.
Avoid moving objects with breaker.
Do not use the breaker and/or the bracket to move objects.
Especially, do not use the swing function to move objects.
Failure to do so may damage the boom, arm, and/or
breaker.
Avoid operating breaker at cylinder stroke end
Always operate the breaker by positioning the cylinder rods
50 mm or longer before the stroke end position.
When operating the breaker with cylinders fully retracted
or extended, hydraulic cylinders, arm or boom may be
damaged.
OPTIONAL ATTACHMENT
ATTACHMENT PEDAL (HYDRAULIC BREAKER)
13-5
MZX5-13-001
MZX5-13-002
MZX5-13-003