MACHINE OPERATIONS AND CONTROLS OPERATION RECOMMENDED APPLICATIONS 0. In addition to the following, it is possible to further increase the range of applications by using various attachments. Backhoe Work 0. A backhoe is suitable for excavating at a position lower than the machine. When the condition of the machine is as shown in the diagram at right, each cylinder's maximum pushing excavation force is obtained when the bucket cylinder and link, arm cylinder and arm are at 90°. When excavating, use this angle effectively to optimize your work efficiency. The range for excavating with the arm is from a 45° angle away from the machine to a 30° angle toward the machine.
There may be some differences depending on the digging depth, not try to keep within the above range rather than oper- ating to the end of the cylinder stroke. Ditching Work 0. Ditching work can be performed efficiently by attaching a bucket which matches the digging operation and then setting the tracks parallel to the line of the ditch to be excavated. To excavate a wide ditch, first dig both sides and then finally remove the center portion. Loading Work 0. In places where the swing angle is small, work efficiency can be enhanced by locating the dump truck in a place easily visi- ble to the operator.
Loading dump trucks is easier and the loading capacity is greater if the hydraulic excavator loads from the rear of the dump truck rather than from the side. 3-68