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80
Great Plains Manufacturing, Inc.
NTA607/2007HD
166-283M
04/09/2019
Planting Depth Adjustments
Planting depth is affected by several adjustments, sum-
marized here:
1.
Soil Conditions:
Changes in field conditions can require changes to
several of the adjustments below.
2.
Row Unit Opener Depth:
The T-handle directly controls opener depth by set-
ting the press wheel height.
3.
Tool Bar Height:
Spacers at the center section (master) lift cylinders
control the center section tool bar height when the
implement is lowered.
Wings must also be level (page 131) for this adjust-
ment to accurately set wing gauge wheel height.
In more challenging conditions, increased cart
weight transfer (page 85) may be required to prevent
openers from lifting tool bar.
4.
Wing Weight Transfer:
If the wings are not operating at desired planting
depth, more center section weight may need to be
transferred to wings.
5.
Coulter Depth:
(option, page 89)
Optional coulters prepare the furrow ahead of the
openers. If coulters are running too shallow or too
deep, the openers may not operate at the desired
depth.
6.
Row Unit Spring Adjustment:
Several rows (in tire tracks) may need to be set to
higher down-force in challenging conditions.
7.
Opener Wear:
Over time, opener disk wear can cause established
T-handle settings to become too shallow.
Null4:
Null4:
Figure 65
NTA607/2007HD Implement
31193