Operating On Soft Ground; Raising The Machine With Boom And Arm - Hitachi ZAXIS 120-6 class Operator's Manual

Operating on Soft Ground

Avoid traveling on very soft ground.
If traveling on soft ground is unavoidable, please carefully
follow below.
 Travel only an area self-propelling is possible. And in
case of any emergency, do not go into depth of retrieval
impossible.
 If the machine becomes unable to travel, lower the
bucket to a firm ground, and evacuate slowly by pulling
the arm with machine raised by boom and arm. In
this case, simultaneously operate the boom, arm and
traveling lever to avoid excessive load to the machine.
Refer to "Raising the Machine with Boom and Arm"
 If the machine becomes stuck or unable to travel due to
the mud or dirt around the truck, raise one truck then
another off the ground using the boom and arm, and
rotate the raised track back and forth to remove the mud
or dirt. Evacuate after the dirt and mud is removed.
 When it becomes unable to evacuate by machine itself,
retrieve the machine with another machine. Be sure to
attach the tow line correctly. (Refer to the "Retrieval"
section.)

Raising the Machine with Boom and Arm

d
WARNING: Operate the machine carefully to avoid
sideslip. Keep the angle of boom and arm between 90
to 110°.
1. Swing the upper structure 90°.
2. Make boom and arm angle to become boom and arm
between 90 to 110°and lower the bucket to raise the
track off ground.
3. Place blocks under machine frame to support the
machine.
IMPORTANT: Do not raise the machine using the bucket
teeth with bucket cylinder in maximum extension
when using the hoe bucket reversed. This may damage
the pin by an excessive load to the pin around the
bucket and bucket cylinder.
DRIVING THE MACHINE
4-4
M104-05-012
90 to 110 °
90 to 110 °
M104-05-013
MZX5-04-003