Figure 9-58.Hydraulic excavator structural members.
When working off the rear of an excavator
that has the dipper stick hydraulic cylinder
mounted on the bottom, in deep digging,
caution must be taken to keep the dipper stick
hydraulic cylinder far enough from the
excavator to allow proper clearance when
Figure 9-59.Boom depth-height adjustment.
The bucket cylinder is hinged to the top or front side
of the dipper stick. The hydraulic cylinder rod is
connected to the bucket dump arms that are hinged to
the dipper stick.
The bucket mounting is normally connected to the
lower end of the dipper stick by a hinge pin and to a