Great Plains NTA2007 Operator Manual - Manual (Page 89)

Great Plains Manufacturing, Inc. Table of Contents Index Adjustments 85
2012-01-05 Table of Contents Index 166-372M
Planting Depth Adjustments
Planting depth is affected by several adjustments,
summarized here:
Refer to Figure 64
1.
Soil Conditions:
Changes in field conditions can require changes to
several of the adjustments below.
2. Row Unit Opener Depth: (page 98)
The T-handle directly controls opener depth by
setting the press wheel height.
3. Tool Bar Height: (page 86)
Spacers at the centre section (master) lift cylinders
control the centre section tool bar height when the
implement is lowered.
Wings must also be level (page 133) for this
adjustment to accurately set wing gauge wheel
height.
In more challenging conditions, increased cart
weight transfer (page 90) may be required to prevent
openers from lifting tool bar.
4. Wing Weight Transfer: (page 90)
If the wings are not operating at desired planting
depth, more centre section weight may need to be
transferred to wings.
5. Coulter Depth: (option, page 92)
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: (page 95)
Several rows (in tire tracks) may need to be set to
higher down-force in challenging conditions.
7. Opener Wear: (page 95)
Over time, opener disc wear can cause established
T-handle settings to become too shallow.
Figure 64
NTA607 and NTA2007 Implement
31193
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