Figure 9-58.—Hydraulic excavator structural members.WARNINGWhen working off the rear of an excavatorthat has the dipper stick hydraulic cylindermounted on the bottom, in deep digging,caution must be taken to keep the dipper stickhydraulic cylinder far enough from theexcavator to allow proper clearance whenswinging.Figure 9-59.—Boom depth-height adjustment.The bucket cylinder is hinged to the top or front sideof the dipper stick. The hydraulic cylinder rod isconnected to the bucket dump arms that are hinged tothe dipper stick.Bucket MountingThe bucket mounting is normally connected to thelower end of the dipper stick by a hinge pin and to a9-25
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