13. Operating Instructions
2-55
You can greatly widen the range of work described here by
using optional attachments.
13-13-1. Backhoe operation
Backhoe operation is suitable for digging the ground below
the machine.
Suppose that the machine is operating as illustrated in the
right figure : a maximum digging force of each cylinder can
be obtained when the angle between the bucket cylinder
and the bucket arm as well as between the arm cylinder
and the arm is maintained at 90 degrees.
When digging, make good use of this angle to increase the
operating efficiency.
To excavate the ground efficiently by manipulating the
arm, the arm needs to be operated within a range of angles
between 45 degrees forward and 30 degrees backwards,
as illustrated in the right figure. Though the range differs
according to the depth of the work, do not move the imple-
ment to the cylinder stroke end.
13-13-2. Ditching
To increase work efficiency, install a suitable bucket for
ditching and position the tracks in parallel with the ditch to
be made.
To make a wide ditch, first dig the two sides, and then dig
the center.
13-13-3. Loading
To increase work efficiency, locate the dump truck at a po-
sition where the swing angle of the machine will be mini-
mized and the operator can clearly view the dump truck.
Load earth from the rear of the dump truck, because it can
be loaded more easily and in larger amount than from the
side.
13-13. Operations using the bucket
90 degrees
000439-00E
30 degrees45 degrees
000440-00E
Parallel
000441-00E
000442-00X
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