Precautions For Crusher Operation - Hitachi ZAXIS 120-6 class Operator's Manual

HYDRAULIC BREAKER, HYDRAULIC CRUSHER AND QUICK COUPLER

Precautions for Crusher Operation

Prevent machine tipping over and damage to the front
attachment. Observe the following precautions for crusher
operation.
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WARNING: Machine stability is reduced as the crusher
is much heavier than bucket. When operating with a
crusher, the machine is more likely to tip over. Falling
or flying objects may hit the cab or other parts of the
machine. Observe the following precautions and take
any other precautions necessary to prevent accidents
and machine damage from occurring.
 Do not allow the machine's weight to be supported by
the crusher or bucket cylinder with the bucket cylinder
fully extended or retracted. Failure to do so may result
in damage to the front attachment. In particular, avoid
supporting the machine's weight with the bucket
cylinder fully extended, as the front attachment will be
easily damaged.
Take care to prevent this happening when dismantling
foundation structures using the crusher.
 Using the front attachment, do not raise the base
machine off the ground with the arm cylinder fully
extended. Failure to do so may result in damage to the
arm cylinder.
 When a heavyweight attachment such as a crusher is
installed, avoid quickly starting or stopping the front
attachment. Failure to do so may result in damage to the
front attachment.
 Do not attempt to perform crushing on either side of
the machine. Always perform crushing operations to the
front or rear, parallel with the tracks. Failure to do so may
result in the machine tipping over.
OPTIONAL ATTACHMENTS AND DEVICES
13-24
MZX5-13-008
MZX5-13-009