Figure 3. Skidsteer Loader
BACKHOES
With the breaker tool in place on the material to be worked, position the backhoe so the boom is halfway up (45°) and the dipper holds the breaker almost vertical. Lower the loader bucket until the weight is off the front tires.
OPERATION |
Apply down force. |
Figure 5. Excavator
POSITIONING THE BREAKER TOOL ON THE WORK MATERIAL
Position the tool bit near the edge of the work material, not in the center or far from the edge. Position the tool
Apply down pressure.
Figure 4. Backhoe
Apply down force to the boom/dipper until the rear of the backhoe is raised off the ground. Rear tires and stabiliz- ers should be off the ground so the total rear weight of the backhoe is on the breaker tool. The breaker is more efficient when adequate down force is applied.
EXCAVATORS
With the breaker tool in place on the material to be worked, position the excavator so the dipper is at ap- proximately 45° and the breaker is almost vertical. The tracks of the excavator should be in line with the boom and the breaker.
Break near the edge.
Figure 6. Position the Tool Bit
On flat material or rock, the breaker should be vertical or “curled” back slightly to direct the impact force down- ward and toward the backhoe. This directs the force back toward the edge of the work material. If the tool is positioned in the center of the work, or too far from the edge, the energy will be absorbed into the material without cracking it. Do not run the breaker longer than 15–20 seconds. If breakout does not occur within this time, move the breaker to another position.
MB656 User Manual ◄ 11
