Work Possible Using Hydraulic Excavator - Komatsu PW130ES-6K Operation & Maintenance Manual

OPERATION OPERATION
WHEN BOTH SIDES ARE STUCK
When all wheels are stuck in mud and the machine will not move,
lay boards as explained above, and dig the bucket into the ground
in front. Then pull in the arm as in normal digging operations and
put the travel levers in the FORWARD position to pull the machine
out.

WORK POSSIBLE USING HYDRAULIC EXCAVATOR

In addition to the following, it is possible to further increase the
range of applications by using various attachments.
BACKHOE WORK
When condition of the machine is as shown in the diagram at
right, each cylinders maximum pushing excavation force is
obtained when the bucket cylinder and link, arm cylinder and arm
are at 90°.
When excavating, use this angle effectively to optimize your work
efficiency.
The range for excavating with the arm is from a 45° angle away
from the machine to a 30° toward the machine.
There may be some differences depending on the excavation
depth, but try to use within the above range rather than going all
the way to the extreme end of the cylinder stroke.
SHOVEL WORK
A shovel is suitable for excavating at a position higher than the
machine. Shovel work is performed by attaching the bucket in the
reverse direction.
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