BI010575
Bucyrus International, Inc.
BI010575 8750 Walking Dragline
The LEFT JOYSTICK operates the drag or propel machinery, depending on the machine drive mode selected. •
When in the DRAG mode: moving the left joystick forward from its neutral position will result in the drag ropes “paying out” off the drum and the bucket will move away from the machine.
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Moving the left joystick rearward from its neutral position will cause the drag ropes to wind onto the drum and the bucket will “drag in” (move toward the machine).
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The Hoist Tension pushbutton, on top of the left joystick, applies reduced hoisting power to the hoist drum (to remove hoist rope slack and to hold the rigging off the bucket while dragging).
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When in the PROPEL mode: holding the left joystick in its FULL REARWARD position from its neutral position results in the shoes going through their walking step and propelling the machine in the direction away from the boom (front end).
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Moving the left joystick forward from its neutral position when in propel is done ONLY to back up the shoes as needed to place them in their top dead center location after a step has been completed.
THE MACHINE WILL NOT PROPEL TOWARD THE BOOM. Refer to WALKING MECHANISM, in this section. The RIGHT JOYSTICK operates the hoist machinery (fore and aft lever movement). The hoist control is activated during DRAG mode. •
Moving the right joystick forward from its neutral position will result in the hoist ropes unwinding from the drum and the bucket will lower toward the ground.
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Moving the right joystick rearward from its neutral position will cause the hoist ropes to wind onto the drum and the bucket will be raised toward the boom point.
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The pushbutton on top of the joystick operates the air horns.
Manual No. 10863
36
March 2011
