Operating Backhoe; Grading Operation - Hitachi ZAXIS 70 Operator's Manual

OPERATING BACKHOE

1. Place the bucket teeth on the ground with the bottom
of the bucket at a 45 degree angle to the ground.
2. Pull the bucket toward the machine using the arm as
the main digging force.
3. When soil sticks to the bucket, remove it by moving
the arm and/or bucket rapidly back and forth.
4. When trenching a straight line, position the tracks
parallel to the trench. After digging to the desired
depth, move the machine as required to continue the
trench.
IMPORTANT: When lowering the boom, avoid sudden
stops that may cause shock load dam-
age to the machine.
When operating the arm, avoid bottom-
ing the cylinder to prevent cylinder dam-
age.
When digging at an angle, avoid striking
the tracks with the bucket teeth.
When digging a deep excavation, avoid
striking the boom or bucket cylinder
hoses against the ground.

GRADING OPERATION

IMPORTANT: Do not pull or push dirt with the bucket
when traveling.
Position the arm slightly forward of the vertical position with
bucket rolled back, as shown.
Operate arm roll-in function while slowly raising the boom.
Once the arm moves past, the vertical position slowly lower
the boom to allow the bucket to maintain a smooth surface.
Grading operation can be more precisely done by operat-
ing the boom, arm and bucket simultaneously.
OPERATING THE MACHINE
5-13
M107-05-037
M1CC-05-003