Operating Hydraulic Crusher - Hitachi EX27U Operator's Manual

OPERATING HYDRAULIC CRUSHER

--- IF EQUIPPED
Select a crusher that is the correct size and weight for the
machine. See your authorized dealer for correct crusher
information.
The crusher is much heavier than the bucket. Operate the
machine slowly to prevent tipping the machine. Also, keep
the following precautions in mind.
Precautions for Crusher Operation
CAUTION: A crusher is heavier than an excava-
tion bucket. Stability will be reduced when oper-
ating the machine with crusher attachment.
In addition, hydraulic crusher operation may
cause debris to fall, soil and dust to scatter, and
fragments of rocks and broken pieces of metal to
fly. Take necessary precautions to prevent the
machine from tipping over and avoid potential
accidents. Also, observe the following precau-
tions to avoid damage to the machine as well as
to avoid potential accidents.
1. Do not allow the machine's weight to be supported by
the crusher or bucket cylinder with the bucket cylinder
fully extended or retracted. Doing so may damage the
front attachment. In particular, avoid doing so with the
bucket cylinder fully extended, as the front attach-
ment will be easily damaged.
Take care to prevent this from happening when dis-
mantling foundation structures using the crusher.
2. Do not attempt to perform crushing on either side of
the machine. Always perform crushing operations to
the fore or rear, parallel with the tracks. Otherwise,
tipping over may occur.
OPERATING THE MACHINE
5-26
WRONG
M107-05-046
WRONG
M107-05-047