Komatsu PC118MR-8, Operation And Maintenance Manual

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USE OF THE MACHINE AND RELATED CONTROLS
FUNCTIONING
3-164
OPERATIONS THAT CAN BE PERFORMED WITH THE HYDRAULIC
EXCAVATOR
3
In addition to those listed below, numerous other applications are possible through the use of optional equipment.
Digging with reversed bucket
When the machine is in the position shown in the diagram on
the right, the maximum digging and thrusting force of each
cylind er is ach ieved wh en the bucke t cylinder and its
articulated joint, the arm cylinder and the arm are at 90° with
respect to each other.
During the digging operations, keep this angle amplitude to
optimize the performance of the machine.
The positions available for digging with the arm range from a
45° angle away from the machine to a 30° angle towards the
machine.
There may be differences depending on the digging depth, but
it is advisable to work within this range rather than making the
cylinder reach the end of stroke.
Digging with front bucket
The bucket is suitable for carrying out digging operations in a
higher position with respect to the machine.
It is possible to carry out loading operations by installing the
bucket in reversed position.
Ditch digging
Ditch digging operations may be effectively carried out by
installing a bucket suitable for this type of digging and
positioning the tracks parallel to the ditch digging line.
To create wide ditches, first dig on both sides and then remove
the earth at the centre.
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