DIGGER DERRICK
1-48
463280 - 9/14 Terex South Dakota, Inc. Digger Derrick
OPERATION GUIDELINES
When the pole has been raised to the vertical position, take up on the winch line until the pole is firmly held
between the boom tip flanges. If the unit is equipped with a pole guide, bring the arms around the pole so
they can be used as a guide when lowering the pole into the hole. See HYDRAULIC TILT POLE PLUMMER
(Optional).
POSITIONING THE POLE INTO THE HOLE
When the pole is controlled, it can be positioned directly over the hole. Make sure all ground personnel are
aware of any pole contact with energized lines and the requirements before contacting pole.
As the pole is being lowered into the hole, a second crew member should assist guiding the pole into the
hole. When the pole is being lowered, it may be necessary to retract the boom section to maintain vertical
alignment of pole.
If the pole needs to be rotated to align gains or cross arms, slack off slightly on the winch line so the pole can
be turned. Have a crew member give directions for plumbing the pole. Meter the controls for boom functions
when plumbing the pole. When the pole is properly plumbed, hold it in position with boom while replacing
and tamping the soil around the pole.
After the pole is tamped, release the winch line and remove from pole.
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