00 series opener down pressure – Great Plains 3S-4000F Operator Manual User Manual
Page 57
Great Plains Manufacturing, Inc.
Adjustments
53
2014-06-10
195-394M
00 Series Opener Down Pressure
Refer to Figure 56
The 3S-4000 has double-disk openers with
depth-controlling press wheels mounted on floating
opener frames. This system provides accurate depth
control and seed placement over uneven terrain. When
used with live closed-center tractor hydraulics the drill
provides constant opener down pressure through a wide
range of opener movement.
Each opener is mounted on a floating opener frame.
Opener bodies are staggered for easy soil flow. Long and
short opener bodies provide for 7 inches of stagger for
planting through residue. All openers pivot on a common
axis to maintain consistent depth as opener frames
follow contours. A single spring provides down pressure
necessary for the double disks to open a seed furrow.
The spring allows openers to float down into depressions
and up over obstructions. Individual openers can be
adjusted to account for tire tracks.
Crushing Hazard:
You will be seriously injured or killed if you are caught
between raising openers and drill frame. Always stop tractor
engine, set park bake, and remove key before adjusting or
servicing openers. Keep all bystanders well away during drill
operation.
High Pressure Fluid Hazard:
Escaping fluid under pressure can penetrate the skin causing
serious injury. Avoid the hazard by relieving pressure before
disconnecting hydraulic lines. Use a piece of paper or
cardboard, NOT BODY PARTS, to check for suspected leaks.
Wear protective gloves and safety glasses or goggles when
working with hydraulic systems. If an accident occurs, see a
doctor immediately.
Opener down pressure controls opener penetration and
press-wheel soil firming. Use only enough down
pressure to cut a furrow and maintain proper soil-firming
over seed. Excessive opener down force may cause
bulldozing of the openers in light soil conditions, and will
lead to premature wear on opener components.
Figure 56
Double Disk Opener
18876
Press Wheel
Double Disk