CONTROL GP-HYDRAULIC 2813131 - Caterpillar

Digging
1. Move the machine to the excavation area. Position the telescopic stick vertical to the ground. 2. Sufficiently and appropriately lower the boom with the telescopic stick kept vertical. Always know the exact location of buried cables and pipes. And also be alert to people and obstructions. 3. Extend the tubes until the clamshell bucket is lowered into the excavation. 4. Start digging. For best penetration, apply down pressure by activating the telescopic cylinder as the bucket is closed.Do not use the falling force of the clamshell bucket for digging. Doing this can cause structual damage.5. When the bucket is fully closed, retract the telescopic stick and raise the boom.6. When the bucket clears the excavation and is raised enough for swinging, engage the swing control. Operate the control smoothly to avoid excessive clamshell swing.7. Begin opening the bucket slowly when approaching the dump area. Stop the swing or stick motion slowly and open the bucket fully.