Precautions For Crusher Operation - Hitachi ZAXIS 70 Operator's Manual

PRECAUTIONS FOR CRUSHER OPERATION

Prevent machine tipping over and damage to the front at-
tachment. Observe the following precautions for crusher
operation.
CAUTION: Machine stability is reduced as
crusher is much heavier than bucket.
When operating with a crusher, the machine is
more apt to tip over. Also, falling or flying objects
may hit the cab or other part of the machine. Ob-
serve 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. Doing so may damage the
front attachment. In particular, avoid doing so with the
bucket cylinder fully extended, as the front attachment
will be easily damaged.
Take care to prevent this from happening when dis-
mantling foundation structures using the crusher.
• Using the front attachment, don't raise the base ma-
chine off the ground with the arm cylinder fully ex-
tended. 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 fore or rear, parallel with the tracks. Otherwise,
tipping over may occur.
• Operate the hydraulic excavator carefully to avoid hit-
ting the boom, boom cylinder and cab.
OPERATING THE MACHINE
5-23
WRONG
M107-05-046
WRONG
M107-05-047
WRONG
M1G6-05-009